6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

__________________________________

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE

SECURITIES EXCHANGE ACT OF 1934

For the month of November 2007

__________________________________

Commission File Number 1-15106 PETRÓLEO BRASILEIRO S.A. - PETROBRAS (Exact name of registrant as specified in its charter) BRAZILIAN PETROLEUM CORPORATION – PETROBRAS (Translation of registrant’s name into English)	Commission File Number 333-14168 PETROBRAS INTERNATIONAL FINANCE COMPANY (Exact name of registrant as specified in its charter) Not Applicable (Translation of registrant’s name into English)
Avenida República do Chile, 65 20035-900 – Rio de Janeiro – RJ, Brazil (55-21) 3224-4477 (Address of principal executive offices)	Anderson Square Building, P.O. Box 714 George Town, Grand Cayman Cayman Islands B.W.I. (Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F X Form 40-F o

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):_____

Note: Regulation S-T Rule 101(b)(7) only permits the submission in paper of a Form 6-K if submitted to furnish a report or other document that the registrant foreign private issuer must furnish and make public under the laws of the jurisdiction in which the registrant is incorporated, domiciled or legally organized (the registrant’s “home country”), or under the rules of the home country exchange on which the registrant’s securities are traded, as long as the report or other document is not a press release, is not required to be and has not been distributed to the registrant’s security holders, and, if discussing a material event, has already been the subject of a Form 6-K submission or other Commission filing on EDGAR.

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934. Yes o No X

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-________.

This report on Form 6-K is incorporated by reference in the Registration Statement on Form of F-3 of Petróleo Brasileiro S.A. - PETROBRAS and Petrobras International Finance Company (No. 333-139459) and its accompanying prospectus supplement dated as of October 29, 2007.

Exhibits

Exhibit 1.1 – Underwriting Agreement

Exhibit 4.1– Standby Purchase Agreement

Exhibit 4.2– First Supplemental Indenture

Exhibit 4.3– Form of Global Note (included in Exhibit 4.2)

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	PETROLEO BRASILEIRO S.A. - PETROBRAS
Date: November 13, 2007	By /s/ Almir Guilherme Barbassa
	Almir Guilherme Barbassa    Chief Financial Officer

	PETROBRAS INTERNATIONAL FINANCE COMPANY
Date: November 13, 2007	By /s/ Sérvio Túlio da R. Tinoco
	Sérvio Túlio da R. Tinoco  Financial Manager

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EX-1.1

Exhibit 1.1

UNDERWRITING AGREEMENT

Among

PETROBRAS INTERNATIONAL FINANCE COMPANY,

PETRÓLEO BRASILEIRO S.A. --PETROBRAS

and

CITIGROUP GLOBAL MARKETS INC.,

BANCO ITAÚ EUROPA, S.A.

and

UBS SECURITIES LLC

Relating to

PIFCO’s

U.S.$1,000,000,000

5.875% Global Notes Due 2018

October29, 2007

TABLE OF CONTENTS

Page   

SECTION 1.      Representations and Warranties	3
SECTION 2.      Purchase and Sale	15
SECTION 3.      Delivery and Payment	15
SECTION 4.      Offering by Underwriters	15
SECTION 5.      Covenants	16
SECTION 6.      Conditions to the Obligations of the Underwriters	16
SECTION 7.      Reimbursement of Expenses	20
SECTION 8.      Indemnification and Contribution	25
SECTION 9.      Termination	26
SECTION 10.    Representations and Indemnities to Survive	28
SECTION 11.    Notices	29
SECTION 12.    Successors	29
SECTION 13.    Jurisdiction	29
SECTION 14.    Governing Law	30
SECTION 15.    Currency	30
SECTION 16.    Waiver of Immunity	30
SECTION 17.     Counterparts	31
SECTION 18.     Entire Agreement	31
SECTION 19.     Headings	31

PETROBRAS INTERNATIONAL FINANCE COMPANY -- PifCo

US$1,000,000,000

5.875% Global Notes Due 2018

Underwriting Agreement

October 29, 2007

Citigroup Global Markets Inc.

388 Greenwich Street

New York, NY 10013

UBS Securities LLC

299 Park Avenue

New York, NY 10171

Ladies and Gentlemen:

Petrobras International Finance Company, a corporation organized under the laws of the Cayman Islands (“PifCo”) and a wholly-owned subsidiary of Petróleo Brasileiro S.A. - Petrobras, a sociedade de economia mista (“Petrobras” and, collectively with PifCo, the “Companies”)organized and existing under the laws of the Federative Republic of Brazil (“Brazil”), proposes to issue and sell to Citigroup Global Markets Inc. (“Citi”), UBS Securities LLC (“UBS”) and Banco Itaú Europa, S.A., (“Itaú,” for whom UBS is acting as representative) (each an “Underwriter” and collectively, the “Underwriters”) US$1,000,000,000 principal amount of its 5.875% Global Notes Due 2018 Payable in U.S. Dollars (the “ Notes”). The Notes are to be issued under the indenture (the “Original Indenture”) dated December 15, 2006 between PifCo and The Bank of New York, as trustee (the “Trustee”), as supplemented by the First Indenture Supplement (the “Indenture Supplement”, and together with the Original Indenture, the “Indenture”) to be dated the Closing Date (as defined herein) between PifCo and the Trustee. The Notes to be issued by PifCo will be evidenced initially by one or more Registered Global Notes (each a “Global Note”) representing the Notes sold or resold pursuant to a registration statement on Form F-3 under the Securities Act of 1933, as amended (the “Securities Act”), dated December 18, 2006, filed with the Securities and Exchange Commission (the “Commission”) (File No. 333-139459-01) covering the registration of one or more series of notes, including the Notes, under the Securities Act and including the related base prospectus in the form dated December 18, 2006 at the time such registration statement became effective (the “Base Prospectus”).

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Except where the context otherwise requires, “Registration Statement,” as used herein, means the registration statement, as amended at the time of such registration statement’s effectiveness for purposes of Section 11 of the Securities Act, as such section applies to the respective Underwriters (the “Effective Time”), including (i) all documents filed as a part thereof or incorporated or deemed incorporated by reference therein and (ii) any information contained or incorporated by reference in a prospectus filed with the Commission pursuant to Rule 424(b) under the Securities Act, to the extent such information is deemed, pursuant to Rule 430B or Rule 430C under the Securities Act, to be part of the Registration Statement at the Effective Time.

The Companies have furnished to you, for use by the Underwriters and by dealers in connection with the offering of the Notes, copies of one or more “preliminary prospectus supplements” relating to the Notes. Except where the context otherwise requires, “Pre-Pricing Prospectus,” as used herein, means each such preliminary prospectus supplement, in the form so furnished, including the Base Prospectus, and the documents incorporated by reference therein.

Except where the context otherwise requires, “Prospectus Supplement,” as used herein, means the final prospectus supplement relating to the Notes, filed by the Companies with the Commission pursuant to Rule 424(b) under the Securities Act on or before the second business day after the date hereof (or such earlier time as may be required under the Securities Act), in the form furnished by the Companies to you for use by the Underwriters and by dealers in connection with the offering of the Notes.

Except where the context otherwise requires, (i) “Final Offering Document,” as used herein, means the Prospectus Supplement together with the Base Prospectus attached to or used with the Prospectus Supplement, (ii) “Permitted Free Writing Prospectuses,” as used herein, means the documents listed on Schedule A attached hereto and the “road show” (as defined in Rule 433 under the Act), listed on Schedule A attached hereto related to the offering of the Notes contemplated hereby (the “Road Show”) and (iii) “Disclosure Package,” as used herein, means any Pre-Pricing Prospectus together with any combination of one or more of the Permitted Free Writing Prospectuses, if any.

Any reference herein to the Registration Statement, any Base Prospectus, any Pre-Pricing Prospectus, the Prospectus Supplement, the Prospectus or any Permitted Free Writing Prospectuses shall be deemed to refer to and include the documents, if any, incorporated by reference, or deemed to be incorporated by reference, therein (the “Incorporated Documents”), including, unless the context otherwise requires, the documents, if any, filed as exhibits to such Incorporated Documents. Any reference herein to the terms “amend,” “amendment” or “supplement” with respect to the Registration Statement, any Base Prospectus, any Pre-Pricing Prospectus, the Prospectus Supplement, the Prospectus or any Permitted Free Writing Prospectus shall be deemed to refer to and include the filing of any document under the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder (collectively, the “Exchange Act”) on or after the initial effective date of the Registration Statement, or the date of such Base Prospectus, such Pre-Pricing Prospectus, the Prospectus Supplement, the Prospectus or such Permitted Free Writing Prospectuses, as the case may be, and deemed to be incorporated by reference.

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All of PifCo’s obligations under the Notes will have the benefit of certain credit support provided by Petrobras, in the form of a Standby Purchase Agreement (the “Standby Purchase Agreement”) to be dated the Closing Date between it and the Trustee, pursuant to which Petrobras will agree, subject to certain conditions, to purchase from the holders of the Notes their rights to receive payments from PifCo in respect of principal, interest and other amounts due on or with respect to the Notes if not paid by PifCo within specified time periods. Terms not otherwise defined herein are used as defined in the Indenture.

SECTION 1. Representations and Warranties. Each of the Companies jointly and severally represents and warrants to the Underwriters as set forth below:

(a)The Companies and the transactions contemplated in this Underwriting Agreement in connection with the offer and sale of the Notes meet the requirements set forth in Form F-3 under the Securities Act for use of the Registration Statement in connection with the offering of the Notes that are the subject of this Underwriting Agreement.

(b)The Registration Statement complied at the Effective Time and complies as of the date hereof in all material respects, with the requirements of the Securities Act; the conditions to the use of Form F-3 in connection with the offering and sale of the Notes as contemplated hereby have been satisfied; the Registration Statement meets, and the offering and sale of the Notes as contemplated hereby complies with, the requirements of Rule 415 under the Securities Act including, without limitation, Rule 415(a)(5); the Registration Statement did not, as of the Effective Time, contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading; each Pre-Pricing Prospectus complied, at the time it was filed with the Commission, and complies as of the date hereof, in all material respects with the requirements of the Securities Act; at no time during the period that begins on the earlier of the date of such Pre-Pricing Prospectus and the date such Pre-Pricing Prospectus was filed with the Commission and ends at the Closing Date did or will any Pre-Pricing Prospectus, as then amended or supplemented, include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading, and at no time during such period did or will any Pre-Pricing Prospectus, as then amended or supplemented, together with any combination of one or more of the then issued Permitted Free Writing Prospectuses, if any, include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; the Final Offering Document will comply, as of the date that it is filed with the Commission, the date of the Prospectus Supplement, the Closing Date, in all material respects, with the requirements of the Securities Act (in the case of the Final Offering document, including, without limitation, Section 10(a) of the Securities Act); at no time during the period that begins on the earlier of the date of the Final Offering Document and the date the Final Offering Document is filed with the Commission and ends at the later of the Closing Date did or will the Final Offering Document, as then amended or supplemented, include an untrue statement of a material fact or omit to state a material

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fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; at no time during the period that begins on the date hereof and ends at the Closing Date did or will the Disclosure Package include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, however, that the Companies make no representation or warranty with respect to any statement contained in the Registration Statement, any Pre-Pricing Prospectus, the Final Offering Document or any Permitted Free Writing Prospectus in reliance upon and in conformity with information concerning an Underwriter and furnished in writing by or on behalf of such Underwriter to the Companies expressly for use in the Registration Statement, such Pre-Pricing Prospectus, the Final Offering Document or such Permitted Free Writing Prospectus which shall consist solely of the fifth paragraph under the caption “Plan of Distribution” in the Prospectus Supplement.

(c)The Companies have filed the Registration Statement with the Commission, the Registration Statement has been declared effective under the Securities Act, no stop order preventing or suspending the use of any Base Prospectus, any Pre-Pricing Prospectus, the Prospectus Supplement, the Final Offering Document or any Permitted Free Writing Prospectus, or the effectiveness of the Registration Statement has been issued, and no proceedings for such purposes have been instituted or, to the Companies’ knowledge, threatened by the Commission.

(d)The Companies confirm their intention to file the Prospectus Supplement with the Commission pursuant to Rule 424(b) under the Securities Act.

(e)Each of the Companies has filed all the documents required to be filed by it with the Commission pursuant to the Exchange Act, including but not limited to the annual reports on Form 20-F for the year ended December 31, 2006 and Forms 6-K in connection with their respective financial statements for the six months ended June 30, 2007. Each document filed or to be filed by the Companies under the Exchange Act complied and will comply when so filed in all material respects with the requirements of the Exchange Act and the applicable rules and regulations of the Commission and the documents incorporated or deemed to be incorporated by reference in the Registration Statement and the Final Offering Document, at the time they were or hereafter are filed with the Commission, complied and will comply in all material respects with the requirements of the Securities Act, the Exchange Act and the rules and regulations thereunder.

(f)The Original Indenture has been, and the form of Indenture Supplement and the form of Standby Purchase Agreement, as of the Closing Date, will be, qualified under the Trust Indenture Act of 1939, as amended (the “TIA”), and all filings and other actions required under the TIA to permit the use of the Indenture, the issuance of the Notes thereunder and the execution by Petrobras and the Trustee of the Standby Purchase Agreement have been made and taken prior to the date hereof.

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(g)Prior to the termination of the offering of the Notes, neither Petrobras nor PifCo has filed any amendment to the Registration Statement or supplement to the Final Offering Document which shall not have previously been furnished to the Underwriters or of which the Underwriters shall not previously have been advised or to which any Underwriter shall have reasonably objected in writing.

(h)Prior to the execution of this Underwriting Agreement, neither Petrobras nor PifCo has, directly or indirectly, offered or sold any Notes by means of any “prospectus” (within the meaning of the Securities Act) or used any “prospectus” (within the meaning of the Securities Act) in connection with the offer or sale of the Notes, in each case other than the Pre-Pricing Prospectuses and the Permitted Free Writing Prospectuses, if any; neither Petrobras nor PifCo has, directly or indirectly, prepared, used or referred to any Permitted Free Writing Prospectuses except in compliance with Rule 163 or with Rules 164 and 433 under the Securities Act; assuming that such Permitted Free Writing Prospectus is so sent or given after such Permitted Free Writing Prospectus was, if required pursuant to Rule 433(d) under the Securities Act, filed with the Commission, the sending or giving, by any Underwriter, of any Permitted Free Writing Prospectus will satisfy the provisions of Rule 164 or Rule 433 (without reliance on subsections (b), (c) and (d) of Rule 164); the conditions set forth in one or more of subclauses (i) through (iv), inclusive, of Rule 433(b)(1) under the Securities Act are satisfied, and the Registration Statement, as initially filed with the Commission, includes a prospectus that, other than by reason of Rule 433 or Rule 431 under the Securities Act, satisfies the requirements of Section 10 of the Securities Act; neither the Companies nor the Underwriters are disqualified, by reason of subsection (f) or (g) of Rule 164 under the Securities Act, from using, in connection with the offer and sale of the Notes, “free writing prospectuses” (as defined in Rule 405 under the Securities Act) pursuant to Rules 164 and 433 under the Securities Act; neither Petrobras nor PifCo is an “ineligible issuer” (as defined in Rule 405 under the Securities Act) as of the eligibility determination date for purposes of Rule 164 and 433 under the Securities Act with respect to the offering of the Notes contemplated by the Registration Statement; the parties hereto agree and understand that the content of any and all Road Shows related to the offering of the Notes contemplated hereby is solely the property of the Companies.

(i)Neither of the Companies is, and after giving effect to the offering and sale of the Notes and the application of the proceeds thereof as described in the Registration Statement and the Final Offering Document will be, an “investment company” or a company “controlled by” an “investment company” as such terms are defined in the United States Investment Company Act of 1940, as amended (the “Investment Company Act”), and the rules and regulations of the Commission promulgated thereunder.

(j)Neither of the Companies, nor any of their affiliates, nor any person acting on their behalf (other than the Underwriters, as to which the Companies make no representation or warranty), has paid or agreed to pay to any person any compensation for soliciting another to purchase (i) the Notes or (ii) any other securities of Petrobras or PifCo within the last 90 days, except in the case of either (i) or (ii) as contemplated by this Underwriting Agreement.

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(k)Neither of the Companies, nor any of their affiliates, nor any person acting on their behalf (other than the Underwriters, as to which the Companies make no representation or warranty), has, directly or indirectly, taken any action designed to cause or which has constituted or which might reasonably be expected to cause or result in the stabilization or manipulation of the price of any security of either of the Companies to facilitate the initial sale or resale of the Notes under the Exchange Act, or otherwise.

(l)PifCo has been duly incorporated and is validly existing as a limited company in good standing under the laws of the Cayman Islands. Each of PifCo’s subsidiaries has been duly incorporated and is validly existing as a corporation in good standing (to the extent that good standing is applicable under applicable law) under the laws of the jurisdiction in which it was chartered or organized. Each of PifCo and its subsidiaries has the full corporate power and authority to own or lease, as the case may be, and to operate its properties and conduct its business as described in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document. PifCo has the full corporate power and authority to file the Registration Statement and to enter into and perform its obligations under this Underwriting Agreement, the Indenture, the Notes and the Standby Purchase Agreement (collectively, the “Transaction Documents”), to which it is a party, and is duly qualified to do business as a foreign corporation under the laws of each jurisdiction which requires such qualification except where the failure to be so qualified will not have a Material Adverse Effect. For the purposes of this Underwriting Agreement, the term “Material Adverse Effect” shall mean (A) any material adverse effect on the condition (financial or otherwise), results of operation or prospects of either of the Companies, together with their respective consolidated subsidiaries, (B) any material adverse effect on the ability of PifCo, Petrobras or any other person to perform their respective obligations under any of the Transaction Documents, or (C) any material adverse effect on the rights of the Trustee, acting on behalf of the holders of the Notes, or such holders, under any of the Transaction Documents.

(m)Petrobras has been duly organized and is validly existing as a sociedade de economia mista in good standing (to the extent that good standing is applicable under applicable law) under the laws of Brazil. Each of Petrobras’ Material Subsidiaries has been duly incorporated and is validly existing as a corporation in good standing (to the extent relevant) under the laws of the jurisdiction in which it is chartered or organized. Each of Petrobras and its Material Subsidiaries is licensed (if and to the extent required by law) and has the full corporate power and authority to own or lease, as the case may be, and to operate its properties and to conduct its business as described in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document and to enter into and perform its obligations under this Underwriting Agreement and the other Transaction Documents to which it is a party, and is duly qualified or licensed as a foreign corporation in good standing in each jurisdiction which requires such qualification, except, in the case of its Material Subsidiaries other than PifCo, where the failure to be so qualified will not have a Material Adverse Effect. Petrobras owns, directly or indirectly, all of the outstanding equity interests of PifCo and its other Material Subsidiaries. For the purposes of this Underwriting Agreement, the term “Material Subsidiary” shall mean, as to any person, any subsidiary of such person which,

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on any given date of determination, accounts for more than 5% of such person’s total assets, as such total assets are set forth on the most recent consolidated financial statements of such person prepared in accordance with U.S. generally accepted accounting principles (or if any such person does not prepare financial statements in U.S. generally accepted accounting principles, consolidated financial statements prepared in accordance with such other generally accepted accounting principles then applicable to such person).

(n)All the outstanding shares of capital stock, if any, of each subsidiary of the Companies have been duly and validly authorized and issued and are fully paid and nonassessable except, in the case of the subsidiaries (other than PifCo), as would not have a Material Adverse Effect, and all outstanding shares of capital stock of the subsidiaries are owned by the Companies, as the case may be, either directly or through wholly-owned subsidiaries free and clear of any perfected security interest or any other security interests, claims, liens or encumbrances.

(o)The Companies’ respective capitalizations are as set forth in the Pre-Pricing Prospectus and the Final Offering Document.

(p)There have been no material changes with respect to the matters disclosed in “Item 11. Qualitative and Quantitative Disclosures About Market Risk” in the Form 20-F of Petrobras for the year ended December 31, 2006 except as otherwise specified in the Pre-Pricing Prospectus and the Final Offering Document.

(q)This Underwriting Agreement has been duly authorized, executed and delivered by each of the Companies; each of the Indenture, the Standby Purchase Agreement and each other document executed and delivered in connection therewith to which either of the Companies is party has been duly authorized and, assuming due authorization, execution and delivery thereof by each other party to those Transaction Documents (other than the Companies), when executed and delivered by the Companies, will constitute a legal, valid and binding agreement of the Companies, as the case may be, enforceable against each of the Companies in accordance with its terms (subject, as to the enforcement of remedies, to applicable bankruptcy, reorganization, insolvency, moratorium or other similar laws affecting creditors’ rights generally from time to time in effect and to general principles of equity); and the descriptions of the Transaction Documents in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document fairly summarize the rights and obligations of the parties thereto.

(r)The Notes have been duly authorized, and, when issued under the Indenture, authenticated by the Trustee and delivered to and paid for by the Underwriters pursuant to this Underwriting Agreement, will have been duly executed, issued and delivered and will constitute legal, valid and binding obligations of PifCo, enforceable in accordance with their terms, subject, as to the enforcement of remedies, to applicable bankruptcy, reorganization, insolvency, moratorium, or other similar laws affecting creditors’ rights generally from time to time in effect and to general principles of equity and will be

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entitled to the benefits provided by the Indenture as described in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document.

(s)The Notes will constitute the general unsecured and unsubordinated obligations of PifCo and will rank pari passu in priority of payment and in right of seniority with all other unsecured and unsubordinated obligations of PifCo that are not, by their terms, expressly subordinated in right of payment to the Notes except for statutory liens and preferences. The obligations of Petrobras under the Standby Purchase Agreement will constitute the general unsecured and unsubordinated obligations of Petrobras and will rank pari passu in priority of payment and in right of seniority with all other unsecured and unsubordinated obligations of Petrobras that are not, by their terms, expressly subordinated in right of payment to the rights of the Trustee under the Standby Purchase Agreement, except for statutory liens and preferences.

(t)No consent, approval, authorization, filing with or order of any court or governmental agency or other regulatory authority or body having jurisdiction over either of the Companies or any of their respective properties or assets in Brazil, the Cayman Islands or elsewhere (“Government Authorities”) is required for (i) the filing of the Registration Statement or the valid authorization, issuance, sale and delivery of the Notes, or (ii) the execution, delivery or performance by the Companies of any of their respective obligations under any of the Transaction Documents in the manner contemplated in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document, including, without limitation, making any of the applicable payments required to be made after the date hereof under or in respect of any of the Transaction Documents, except for (i) the filing of the Prospectus Supplement pursuant to Rule 424(b) under the Securities Act, (ii) such consents as may be required under state or foreign securities or blue sky laws and (iii) such filings or consents as may be required by the by-laws and rules of the National Association of Securities Dealers, Inc. (the “NASD”) or NASD Regulation, Inc. (“NASDR”) in connection with the use of the Base Prospectus for issuances of securities by the Companies and the purchase and distribution of the Notes by the Underwriters and the confirmation by the NASD that it has no objection with respect to the fairness and reasonableness of the underwriting terms and arrangements, each of which has, to the best knowledge of the Companies, been obtained and is in full force and effect.

(u)Neither of the Companies is currently in violation of its charter, by-laws or comparable organizational documents; neither the issuance and sale of the Notes, the execution and delivery of any of the Transaction Documents nor the consummation of any of the transactions described or contemplated therein, nor the fulfillment of the terms thereof will conflict with, or give rise to any right to accelerate the maturity or require the prepayment, repurchase or redemption of any indebtedness under, or result in a breach or violation or imposition of any lien, charge or encumbrance upon any property or assets of the Companies or any of their subsidiaries pursuant to, (i) the charter, by-laws or comparable organizational documents of either of the Companies or any of their Material Subsidiaries, (ii) the terms of any indenture, contract, lease, mortgage, deed of trust, note agreement, loan agreement or other agreement, obligation, condition, covenant or

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instrument to which either of the Companies or any of their subsidiaries is a party or is bound or to which any of their property or assets is subject or (iii) any statute, law, rule, regulation, judgment, order or decree applicable to either of the Companies or any of their subsidiaries, except in the case of clauses (ii) or (iii) such as could not reasonably be expected to have a Material Adverse Effect.

(v)The consolidated historical financial statements of the Companies and their consolidated subsidiaries included in the Final Offering Document, together with the related notes, have been prepared in accordance with accounting principles generally accepted in the United States applied on a consistent basis throughout the periods involved (except as otherwise noted therein) and present fairly in all material respects the financial condition, results of operations and cash flows of the Companies as of the dates and for the periods indicated; the summary financial information set forth under the captions “Summary Financial Information for PifCo” and “Summary Financial Information for Petrobras” in the Pre-Pricing Prospectus and the Final Offering Document fairly present, on the basis stated in the Pre-Pricing Prospectus and the Final Offering Document, the information included therein. Except as disclosed in the Pre-Pricing Prospectus and the Final Offering Document, there has been no material adverse change in the condition (financial or otherwise), prospects, earnings, business or properties of either of the Companies and their consolidated subsidiaries, taken as a whole, since December 31, 2006. The segment data and other financial and statistical information incorporated by reference in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document present fairly the information included therein and have been prepared on a basis consistent with that of the financial statements that are incorporated by reference in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document and the books and records of the respective entities presented therein.

(w)There are no pro forma or consolidated financial statements or other financial statements or data which are required to be included or incorporated by reference in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document in accordance with Regulation S-X under the Securities Act which have not been included as so required.

(x)The statistical, industry-related and market-related data included in the Pre-Pricing Prospectus and the Final Offering Document are based on or derived from sources which the Companies reasonably and in good faith believe are reliable and accurate, and such data agree with the sources from which they are derived.

(y)Except as set forth or contemplated in the Pre-Pricing Prospectus and the Final Offering Document, neither of the Companies has entered into any transaction or agreement (whether or not in the ordinary course of business) material to either of the Companies individually or the Companies taken as a whole with their consolidated subsidiaries.

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(z)No action, suit or proceeding by or before any Governmental Authority involving the Companies or any of their subsidiaries or their property or assets is pending or, to the best knowledge of the Companies, threatened, involving or in any way relating to (i) this Underwriting Agreement, any of the other Transaction Documents or the transactions contemplated herein or therein or (ii) any other matter that individually or in the aggregate could reasonably be expected to have a Material Adverse Effect, except as set forth in or contemplated in the Pre-Pricing Prospectus and the Final Offering Document. Neither the Companies nor any of their subsidiaries is in violation of or in default with respect to any applicable statute (including, without limitation, any applicable provision of the Sarbanes-Oxley Act, including any rules and regulations thereunder or related thereto), rule, writ, injunction, decree, order or regulation of any Governmental Authority having jurisdiction over such Person which is reasonably likely to have a Material Adverse Effect.

(aa)Each of the Companies and each of their respective subsidiaries has good and marketable title to all of their properties and assets and owns or leases all such properties and assets as are both described in the Pre-Pricing Prospectus and the Final Offering Document and necessary to the conduct of its operations as presently conducted free and clear of any liens, charges, security interests or other encumbrances except such as (i) do not materially interfere with the intended use thereof and (ii) could not reasonably be expected to have a Material Adverse Effect. All leases and subleases material to the business of each of the Companies under which either of the Companies holds properties, as described in the Pre-Pricing Prospectus and the Final Offering Document, are in full force and effect; and neither of the Companies has had any notice that any material claim of any sort has been asserted by anyone adverse to the Companies’ rights under any leases or subleases mentioned above, or affecting or questioning the rights thereof to the continued possession of the leased or subleased premises under any such lease or sublease, except as would not result in a Material Adverse Effect.

(bb)Ernst & Young Auditores Independentes and KPMG Auditores Independentes (who have certified the financial statements of the Companies and supporting schedules and information of the Companies and their consolidated subsidiaries and delivered their reports with respect to the audited and unaudited consolidated financial statements and other financial information included in the Pre-Pricing Prospectus and the Final Offering Document relating to the Companies and their consolidated subsidiaries) are independent public accountants within the meaning of the Code of Professional Conduct of the American Institute of Certified Public Accountants and the applicable requirements of Regulation S-X under the Securities Act and the Exchange Act and are certified public accountants with respect to the Companies under the standards established by the local authorities in the Cayman Islands and Brazil.

(cc)        Each of the Companies and their respective subsidiaries has filed or caused to be filed all tax returns which to the knowledge of the Companies are required to be filed, and has paid all taxes shown to be due and payable on said returns or on any assessments made against such person or any of its respective properties and all other

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taxes, assessments, fees or other charges imposed on such person or any of its respective properties by, any Governmental Authority (other than those the amount or validity of which is currently being contested in good faith by appropriate proceedings and with respect to which reserves in conformity with generally accepted accounting principles have been provided on the books of such person); and no material tax liens or material liens with respect to any assessments, fees or other charges have been filed and, to the knowledge of such person, no material claims are being asserted with respect to any such taxes, assessments, fees or other charges.

(dd)The Companies and each of their respective subsidiaries are insured by insurers that the Companies reasonably believe to be financially sound against such losses and risks and in such amounts as are prudent and customary in the businesses and in the geographical regions in which they are engaged, except when the failure to do so would not have a Material Adverse Effect; and neither of the Companies nor any subsidiary thereof has any reason to believe that it will not be able to renew its existing insurance coverage as and when such coverage expires or to obtain similar coverage from similar insurers as may be necessary to continue its business at a cost that would not have a Material Adverse Effect.

(ee)No subsidiary of the Companies is currently prohibited, directly or indirectly, from paying any dividends to either of the Companies, from making any other distribution on such subsidiary’s capital stock, from repaying to the Companies any loans or advances to such subsidiary from the Companies or from transferring any of such subsidiary’s property or assets to the Companies or any other subsidiary of the Companies.

(ff)        The Companies and their subsidiaries possess all material licenses, certificates, permits and other authorizations issued by the appropriate federal, state or foreign regulatory authorities necessary to conduct their respective businesses, and neither of the Companies nor any of their subsidiaries has received any notice of proceedings relating to the revocation or modification of any such certificate, authorization or permit which, singly or in the aggregate, if the subject of an unfavorable decision, ruling or finding, could have a Material Adverse Effect.

(gg)To ensure the legality, validity, enforceability or admissibility into evidence of any of the Transaction Documents, it is not necessary that any such other document be filed or recorded with any court or other authority in Brazil or the Cayman Islands (other than such authorizations or filings that have already been obtained or made, as applicable), or that any stamp or similar tax be paid in either Brazil or the Cayman Islands on or in respect of any such document, except as provided in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document. It is not necessary under the laws of Brazil or the Cayman Islands that any of the holders of the Notes be licensed, qualified or entitled to carry on business in either Brazil or the Cayman Islands by reason of the execution, delivery, performance or enforcement of any of the Transaction Documents.

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(hh)The Companies and each of their respective subsidiaries each maintain a system of internal accounting and other controls sufficient to provide reasonable assurance that (i) transactions are executed in accordance with management’s general or specific authorizations, (ii) transactions are recorded as necessary to permit preparation of financial statements in accordance with accounting principles generally accepted in the United States and to maintain asset accountability, (iii) access to assets is permitted only in accordance with management’s general or specific authorization and (iv) the recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences.

(ii)        The Companies and their respective subsidiaries (i) are in compliance with any and all applicable foreign, federal, state and local laws and regulations relating to the protection of human health and safety, the environment or hazardous or toxic substances or wastes, pollutants or contaminants (“Environmental Laws”), (ii) have received and are in compliance with all permits, licenses or other approvals required of them under the applicable Environmental Laws to conduct their respective businesses and (iii) except as described in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document, have not received notice of any actual or potential liability for the investigation or remediation of any disposal or release of hazardous or toxic substances or wastes, pollutants or contaminants, except in the case of clauses (i), (ii) and (iii) above where such non-compliance with Environmental Laws, failure to receive required permits, licenses or other approvals, or liability would not, individually or in the aggregate, have a Material Adverse Effect. Except as set forth in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document, neither of the Companies nor any of their subsidiaries has been named as a “potentially responsible party” under the United States Comprehensive Environmental Response, Compensation, and Liability Act of 1980, as amended, nor has the Company or any such subsidiary been identified as the party responsible or potentially responsible for any breach or violation of any other similar Environmental Law.

(jj)        In the ordinary course of its business, the Companies periodically review the effect of Environmental Laws on the business, operations and properties of the Companies and their subsidiaries, in the course of which it identifies and evaluates associated costs and liabilities (including, without limitation, any capital or operating expenditures required for clean-up, closure of properties or compliance with Environmental Laws, or any permit, license or approval, any related constraints on operating activities and any potential liabilities to third parties). On the basis of such review, the Companies have reasonably concluded that such associated costs and liabilities would not, singly or in the aggregate, have a Material Adverse Effect.

(kk)The information set forth in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document relating to oil and gas reserves, oil and gas wells and any other oil and gas related information required to be disclosed in such Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document has been prepared by the Companies in all material respects on the basis disclosed in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document and

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conforms in all material respects to the requirements of the Securities Act and the Exchange Act, as the case may be.

(ll)        The indemnification and contribution provisions set forth in Section 8 hereof do not contravene Brazilian or Cayman Islands law or public policy.

(mm)The Companies are subject to civil and commercial law in respect of their obligations hereunder and the Companies are not, nor are any of their properties, assets or revenues subject to any right of immunity under Cayman Islands, Brazilian or New York law, from any legal action, suit or proceeding, from the giving of any relief in any such legal action, suit or proceeding, from set-off or counterclaim, from the jurisdiction of any Cayman Islands, Brazilian, New York or U.S. federal court, from service of process, attachment upon or prior to judgment, or attachment in aid of execution of judgment, or from execution of a judgment, or other legal process or proceeding for the giving of any relief or for the enforcement of a judgment, in any such court with respect to its obligations, liabilities or any other matter under or arising out of or in connection herewith; and, to the extent that the Companies or any of their properties, assets or revenues may have or may hereafter become entitled to any such right of immunity in any such court in which proceedings arising out of, or relating to the transactions contemplated hereby, may at any time be commenced, the Companies have waived or will waive such right to the extent permitted by law and have consented to such relief and enforcement as provided herein.

(nn)The submission of the Companies to the non-exclusive jurisdiction of the courts of the Supreme Court of the State of New York, County of New York, and the United States District Court for the Southern District of New York (each, a “New York court”) in Section 13 hereof and under each of the Transaction Documents, as applicable, is legal, valid and binding under the laws of Brazil and the Cayman Islands; the appointment of Petrobras’ New York office located at 570 Lexington Avenue, 43rd Floor, New York, New York 10022 as its authorized agent for the purpose described in Section 13 below and under each of the other Transaction Documents, as applicable, is legal, valid and binding under the laws of Brazil and the Cayman Islands; and the choice of law provision set forth in Section 14 below and in each Transaction Document, as applicable, is legal, valid and binding under the laws of Brazil and the Cayman Islands.

(oo)Any final judgment for any amount payable by the Companies rendered by any court of the State of New York or of the United States located in the State of New York having jurisdiction under its own domestic laws in respect of any suit, action or proceeding against the Companies based upon any Transaction Document would be declared enforceable against the Companies by the courts of the Cayman Islands or Brazil, as applicable, without re-examination, review of the merits of the cause of action in respect of which the original judgment was given or relitigation of the matters adjudicated upon or payment of any stamp, registration or similar tax or duty, as provided in the provisions for enforcement of foreign judgments set forth in the Pre-Pricing Prospectus and the Final Offering Document.

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(pp)No part of the proceeds of the sale of the Notes will be used for any purpose that violates the provisions of any of Regulation T, U or X of the Board of Governors of the Federal Reserve System or any other regulation of such Board of Governors.

(qq)Both presently and immediately after giving effect to the transactions contemplated hereunder, each of the Companies (i) is and will be able to pay its debts as they become due and (ii) is not insolvent as defined under applicable Brazilian bankruptcy, insolvency or similar law or Cayman Islands bankruptcy, insolvency or similar law.

(rr)         None of the holders of the Notes, the Underwriters or the Trustee will be deemed resident, domiciled, carrying on business or subject to taxation in Brazil or the Cayman Islands solely by the execution, delivery, performance or enforcement of any of the Transaction Documents or by virtue of the ownership or transfer of a Note or the receipt of payment thereon assuming that none of such persons is a resident of Brazil or the Cayman Islands or has a permanent establishment or a fixed base in Brazil or the Cayman Islands.

(ss)        There are no Cayman Islands taxes on or by virtue of the execution or delivery of this Underwriting Agreement, the Indenture, the Notes or any of the other Transaction Documents or any other document to be furnished hereunder or thereunder. Payments to be made by the Companies or any other party to any of the Transaction Documents pursuant to the Transaction Documents will not be subject to Cayman Islands taxes. There are no stamp or other issuance or transfer taxes or duties or other similar fees or charges required to be paid in connection with the execution and delivery of any of the Transaction Documents or the consummation of any of the other transactions described therein or the issuance and sale by PifCo of the Notes.

(tt)       There is no tax, levy, impost, deduction, charge or withholding imposed, levied or made by or in Brazil or any political subdivision or taxing authority thereof or therein either (i) on or by virtue of the execution or delivery of this Underwriting Agreement or any of the other Transaction Documents or (ii) on any payment to be made by Petrobras to the Trustee or the holders of the Notes pursuant to the Standby Purchase Agreement, except with respect to any payment of interest, fees or other income made to a party hereto or thereto outside of Brazil from funds of Petrobras in Brazil each of which currently would be subject to a withholding tax which, as of the date hereof, is levied at the rate of 15%, 25% if the beneficiary is domiciled in a tax haven jurisdiction, or such other lower rate, as it m ay be contemplated in a bilateral treaty aimed at avoiding double taxation between Brazil and such other country where the recipient of the payment has its domicile. Petrobras is permitted to make all payments pursuant to the Standby Purchase Agreement free and clear of all taxes, levies, imposts, deductions, charges or withholdings imposed, levied or made by or in Brazil or any political subdivision or taxing authority thereof or therein, and no such payment in the hands of the Trustee will be subject to any tax, levy, impost, deduction, charge or withholding imposed, levied or made by or in Brazil or any political subdivision or taxing authority therein or thereof, in

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each case except as provided in the immediately preceding sentence. Petrobras intends to make all payments pursuant to this Underwriting Agreement from funds offshore Brazil. To ensure the legality, validity, enforceability or admissibility in evidence of the Transaction Documents in Brazil, it is not necessary that the Transaction Documents or any other document be filed or recorded with any court or other authority in Brazil, other than the notarization of the signatures of the parties signing outside Brazil, the subsequent consularization (authentication) of the signature of such a notary by a Brazilian consulate official and the subsequent translation of the relevant Transaction Document into Portuguese by a sworn translator.

SECTION 2. Purchase and Sale. Subject to the terms and conditions and in reliance upon the representations and warranties herein set forth, PifCo agrees to sell the Notes with an aggregate principal amount of US$1,000,000,000 to the Underwriters, and each of the Underwriters severally agrees to purchase from PifCo, the aggregate principal amount of the Notes listed on Schedule B attached hereto at a purchase price of 98.612% % of the aggregate principal amount of the Notes (the “Purchase Price”).

SECTION 3. Delivery and Payment. (a)  Delivery of and payment for the Notes shall be made at the offices of Shearman & Sterling LLP in New York or such other place as shall be agreed upon by the parties hereto at 10:00 A.M., New York City time, on November 1, 2007, or at such time on such later date as the Underwriters shall designate, which date and time may be postponed by agreement between the Underwriters and PifCo (such date and time of delivery and payment for the Notes being herein called the “Closing Date”). Delivery of the Notes shall be made to the Underwriters against payment by the Underwriters of U.S.$983,120,000 (the “Net Proceeds”) to or upon the order of PifCo by wire transfer payable in immediately available funds to the account specified in writing by PifCo not less than three Business Days prior to the Closing Date. The Net Proceeds represent an amount equal to (i) the Purchase Price less (ii) U.S. $3,000,000 payable to the Underwriters representing 0.30% of the aggregate principal amount of the Notes to be issued on the Closing Date (the “Selling Commission”). Delivery of the Notes shall be made through the facilities of The Depository Trust Company (“DTC”) unless the Underwriters shall otherwise instruct.

(b)For the purposes of this Underwriting Agreement, the term “Business Day” means each Monday, Tuesday, Wednesday, Thursday and Friday that is not a day on which banking institutions in the City of New York are authorized or obligated by law, executive order or regulation to close.

SECTION 4. Offering by Underwriters. Each Underwriter represents and warrants to and agrees as to itself with the Companies that:

(a)Except as set forth in the Pre-Pricing Prospectus and the Final Offering Document, such Underwriter will not engage in any activity that reasonably can be expected to cause or result, under the Exchange Act, in stabilization or manipulation of the price of any security of PifCo or Petrobras to facilitate the sale or resale of the Notes.

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(b)Such Underwriter shall offer the Notes for sale to the public upon the terms and conditions set forth in the “Plan of Distribution” sections in the Pre-Pricing Prospectus and the Final Offering Document.

(c) Unless such Underwriter obtains the prior consent of the Companies, it has not made and will not make any offer relating to the Notes that would constitute a “free writing prospectus” (as defined in Rule 405 under the Securities Act) required to be filed by the Companies with the Commission or retained by the Companies under Rule 433 under the Securities Act. The Companies agree that (x) they have treated and will treat, as the case may be, each Permitted Free Writing Prospectus as an Issuer Free Writing Prospectus and (y) the Companies have complied and will comply, as the case may be, with the requirements of Rules 164 and 433 applicable to any Permitted Free Writing Prospectus, including in respect of timely filing with the Commission, legending and record keeping.

SECTION 5. Covenants. The Companies jointly and severally agree with the Underwriters that:

(a)The Companies will furnish to the Underwriters and to counsel for the Underwriters, without charge, during the period referred to in paragraph (d) below, as many copies of the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document and any amendments and supplements thereto (in each case including all exhibits filed therewith and all documents incorporated therein not previously furnished to the Underwriters) as any Underwriter may reasonably request, including the delivery of copies of the Prospectus Supplement to the Underwriters, one of which shall be signed by a duly authorized officer of the Companies.

(b)The Companies will not amend or supplement, during the period specified in (d) below, the Registration Statement, the Pre-Pricing Prospectus or the Final Offering Document without the prior written consent of the Underwriters, which consent will not be unreasonably withheld.

(c)The Companies will notify the Underwriters in writing immediately (i) of any request by the Commission for any amendment of or supplement to the Registration Statement, the Pre-Pricing Prospectus or the Final Offering Document or for any additional information, (ii) of the Companies’ intention to file or prepare any supplement or amendment to the Registration Statement, the Pre-Pricing Prospectus or the Final Offering Document, (iii) of the mailing or the delivery to the Commission for filing of any amendment of or supplement to the Registration Statement, the Pre-Pricing Prospectus or the Final Offering Document, (iv) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement or any post-effective amendment thereto or of the initiation, or the threatening, of any proceedings therefor, (v) of the receipt of any comments from the Commission, and (vi) of the receipt by the Companies of any notification with respect to the suspension of the qualification of the Notes for sale in any jurisdiction or the initiation or threatening of any proceeding for that purpose. If the Commission shall propose or enter a stop order at any time, the

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Companies will make every reasonable effort to prevent the issuance of any such stop order and, if issued, to obtain the prompt lifting of such order.

(d)If, during such period after the commencement of the offering of the Notes any Underwriter or any dealer is required by law to deliver a prospectus, any event occurs as a result of which the Final Offering Document, as then amended or supplemented, would include any untrue statement of a material fact or omit to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, or if it should be necessary to amend or supplement the Final Offering Document to comply with applicable law, the Companies promptly (i) will notify such Underwriter of any such event, (ii) subject to the requirements of paragraph (b) of this Section 5, will prepare an amendment or supplement that will correct such statement or omission or effect such compliance and (iii) will supply any supplemented or amended Final Offering Document to such Underwriter and counsel for such Underwriter, without charge, in such quantities as such Underwriter may reasonably request.

(e)PifCo will (i) prepare the Prospectus Supplement in form reasonably satisfactory to the Underwriters, (ii) file the Prospectus Supplement with the Commission pursuant to Rule 424(b) within 2 Business Days of the date hereof and (iii) advise the Underwriters promptly of the filing of the Prospectus Supplement pursuant to Rule 424(b) or otherwise and of any amendment or supplement to the Final Offering Document or Registration Statement or of official notice of institution of proceeding for, or the entry of, a stop order suspending the effectiveness of the Registration Statement and, if such a stop order should be issued, make every reasonable effort to obtain the prompt lifting thereof.

(f)The Companies will promptly deliver to Shearman & Sterling LLP a signed copy of the Registration Statement, as initially filed and all amendments thereto, including all consents and exhibits filed therewith, and will maintain in the Companies’ files manually signed copies of such documents for at least five years after the date of filing.

(g)PifCo will arrange, if necessary, for the qualification of the Notes for sale by each Underwriter under the laws of such jurisdictions as such Underwriter may designate and will maintain such qualifications in effect so long as required for the completion of the distribution of the Notes; provided, however, that in no event shall the Companies be obligated to qualify to do business in any jurisdiction where it is not now so qualified or to take any action that would subject it to service of process in suits, other than those arising out of the offering or sale of the Notes, in any jurisdiction where it is not now so subject. The Companies will promptly inform the Underwriters, and shall confirm such information in writing, of the receipt by either of the Companies of any notification with respect to the suspension of the qualification of the Notes for sale in any jurisdiction or the initiation or threatening of any proceeding for such purpose. The Companies will file such statements and reports as may be required by the laws of each jurisdiction in which the Notes have been qualified or registered as provided above.

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(h)Prior to the completion of the distribution of the Notes by the Underwriters (as determined by the Underwriters), the Companies will not, and will not permit any of their affiliates to, acquire any Notes.

(i)The Companies will cooperate with the Underwriters and will take all such action as is necessary to permit the Notes to be eligible for clearance and settlement through DTC.

(j)The Companies will prepare a final term sheet for the Notes containing only a description of the Notes, and will file such term sheet pursuant to Rule 433(d) under the Securities Act within the time required by such rule (the “Final Term Sheet”). Any such Final Term Sheet is a Permitted Free Writing Prospectus for purposes of this agreement. A form of the Final Term Sheet for the Notes is attached hereto as Schedule C.

(k)Neither of the Companies will, for so long as the Notes are outstanding, be or become, or be or become owned by, an open-end investment company, unit investment trust or face-amount certificate company that is or is required to be registered under Section 8 of the Investment Company Act, and will not be or become, or be or become owned by a closed-end investment company required to be registered but not registered thereunder.

(l)The Companies will not for a period of 45 days following the date hereof, without the prior written consent of the Underwriters, offer, sell or contract to sell, or otherwise dispose of or enter into any transaction which is designed to, or could reasonably be expected to, result in the disposition (whether by actual disposition or effective economic disposition due to cash settlement or otherwise) by the Companies or any of their affiliates or any person in privity with the Companies or any of their affiliates, directly or indirectly, or announce the offering of, or file a registration statement for, any securities substantially similar to the Notes issued or guaranteed by the Companies (other than the Notes, any export credit agency loans and trade-related facilities).

(m)The Companies will not and will request their affiliates not to offer, sell or solicit offers to buy or otherwise negotiate in respect of any security (as defined in the Securities Act) the offering of which security could be integrated with the sale of the Notes.

(n)The Companies will not take, directly or indirectly, any action designed to or which has constituted or which could reasonably be expected to cause or result, under the Exchange Act or otherwise, in stabilization or manipulation of the price of any security of PifCo or Petrobras to facilitate the sale or resale of the Notes.

(o)PifCo will use the net proceeds received by it from the sale of the Notes in the manner specified in the Final Prospectus under the caption “Use of Proceeds.”

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(p)Prior to the Closing Date, neither of the Companies nor their affiliates will issue any press release or other communications directly or indirectly or hold any press conference relating to the Notes, without each Underwriter’s prior written consent (which shall not be unreasonably withheld), unless in the judgment of either of the Companies and its counsel, and after notification to each Underwriter, such press release or communication is required by law or except as issued or held, as the case may be, in accordance with the applicable regulations promulgated under the Securities Act.

(q)The Companies will pay any stamp, issue, registration, transaction or similar documentary taxes and duties, including interest and penalties, payable on or in connection with the creation, issue and offering of the Notes, or the execution or delivery of the Transaction Documents or the enforcement by the Underwriters of this Underwriting Agreement against the Companies or any transaction carried out pursuant to this Underwriting Agreement; and, in addition to any amount payable by it under this Underwriting Agreement, any value-added, turnover or similar tax payable in respect of that amount (and references in this Underwriting Agreement to such amount shall be deemed to include any such taxes so payable in addition to it and express mention of such payment of any taxes (if applicable) in any provisions hereof shall not be construed as excluding such payment of any taxes in those provisions hereof where such express mention is not made); the Companies will indemnify each Underwriter against any loss, liability, cost, claim, action, demand or expense (including, but not limited to, reasonable legal fees) which such Underwriter may incur or which may be made against such Underwriter arising out of or in relation to or in connection with any failure to pay or delay in paying any such taxes.

(r)Neither the sale of the Notes nor the use of the proceeds thereof will violate any regulation of the United States Treasury Department contained in 31 C.F.R., Chapter V Subpart B, as amended, or Executive Orders 12722 and 12724 (55 Fed. Reg. 31803 and 55 Fed. Reg. 33089) Blocking Iraqi Government Property and Prohibiting Transactions with Iraq or the International Money Laundering Statement and Financial Anti-Terrorism Act of 2001.

(s)The Companies will furnish a copy of each amendment of the Transaction Documents to each Underwriter at such Underwriter’s address set forth in Section 11 hereof.

(t)The Companies agree to pay all costs and expenses relating to the offering of Notes, including, without limitation, (i) the fees and expenses of the Companies’ accountants and counsel (including Brazilian, Cayman Islands and United States counsel), (ii) the preparation, printing or reproduction of the Final Offering Documents and all amendments or supplements to either of them and all expenses in connection with the filing of the Final Offering Documents and any and all amendments and supplements thereto with the Commission, (iii) the filing fees incident to, and the fees and disbursements of counsel for the Underwriters in connection with, securing any required review by the NASD of the terms of the offering of the Notes, (iv) the fees and expenses of the Trustee and any registrars and paying agent contemplated in the Indenture, (v)  the

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transportation and other expenses incurred by or on behalf of Companies’ personnel and all expenses incurred by the Underwriters, in both cases in connection with “road show” presentations to prospective purchasers of the Notes, (vi) the costs of delivery (including postage, air freight charges and charges for counting and packaging) of such copies of the Final Offering Document, and all amendments or supplements thereto, as may, in each case, be reasonably requested for use in connection with the offering and sale of the Notes, (vii) the preparation, printing, authentication, issuance and delivery of certificates for the Notes, including any stamp, transfer or other similar taxes in connection with the original issuance and sale of the Notes, (viii) the printing (or reproduction) and delivery of this Underwriting Agreement, any blue sky memorandum and all other agreements or documents printed (or reproduced) and delivered in connection with the offering of the Notes, (ix) any registration or qualification of the Notes for offer and sale under the securities or blue sky laws of the several states (including filing fees but not including the fees and expenses of counsel for the Underwriters relating to such registration and qualification) and (x) all other costs and expenses incident to the performance by PifCo and Petrobras of their obligations hereunder and under any of the various transaction documents entered into in connection with the Notes; it being understood and agreed that all amounts payable hereunder shall be paid in U.S. dollars and free and clear of, and without any deduction or withholding for or on account of, any current or future taxes, levies, imposts, duties, charges or other deductions or withholdings levied in any jurisdiction from or through which payment is made, unless such deduction or withholding is required by applicable law, in which event the Companies will pay additional amounts so that the persons entitled to such payments will receive the amount that such persons would otherwise have received but for such deduction or withholding.

(u) The Companies consent to the use by any Underwriter of any Permitted Free Writing Prospectus.

(v) PifCo will use its reasonable best efforts to cause the Notes to be listed on the New York Stock Exchange as promptly as possible after the Closing Date.

SECTION 6. Conditions to the Obligations of the Underwriters. The obligations of each Underwriter to purchase the Notes shall be subject to the following conditions:

(a)The Registration Statement shall be effective and no stop order suspending the effectiveness of the Registration Statement shall be in effect on the Closing Date and no proceedings for that purpose shall be pending before, or threatened by, the Commission on the Closing Date.

(b)PifCo and Petrobras shall have filed the Prospectus Supplement with the Commission pursuant to Rule 424(b) within two Business Days of the date hereof and all documents incorporated therein by reference shall have been filed with the Commission prior to the date of such filing.

(c)On or prior to the Closing Date (i) a certified copy of the Original Indenture and (ii) a certified copy of a signed copy of the Registration Statement, as initially filed

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and all amendments thereto, including all consents and exhibits filed therewith shall have been delivered to the Underwriters.

(d)On or prior to the Closing Date, the following shall have been executed and delivered to the Underwriters, each dated the Closing Date:

(i)the Indenture and the Indenture Supplement duly executed and delivered by PifCo and the Trustee in form and substance reasonably acceptable to such Underwriter; and

(ii)the Standby Purchase Agreement duly executed and delivered by Petrobras and the Trustee in form and substance reasonably acceptable to the Underwriters.

(e)All of the applicable taxes, fees and other charges due and owing in connection with the execution and delivery of the Transaction Documents shall have been paid.

(f)The Underwriters shall have received from each of Ernst & Young Auditores Independentes and KMPG Auditores Independentes, the independent public accountants for the Companies, (x) on the date hereof, a comfort letter dated the date hereof addressed to the Underwriters, in form and substance reasonably satisfactory to the Underwriters, concerning the financial statements and certain information with respect to the Companies set forth in the Final Offering Document (including the documents incorporated by reference therein) and (y) on the Closing Date, a “bring down” comfort letter, dated the Closing Date, in form and substance reasonably satisfactory to the Underwriters.

(g)The National Association of Securities Dealers, Inc. shall have approved the underwriting arrangements contemplated herein and the Notes shall be eligible for clearance and settlement through DTC.

(h)PifCo shall have furnished to the Underwriters a certificate of PifCo, signed by an authorized officer of PifCo acceptable to the Underwriters, dated the Closing Date and in form and substance reasonably satisfactory to the Underwriters certifying:

(i)that the conditions set forth in subsections (a), (b) and (c) of this Section 6 have been satisfied;

(ii)that no stop order suspending the effectiveness of the Registration Statement, the Final Offering Document or any amendment thereto has been issued and no proceedings therefor have been initiated or threatened by the Commission;

(iii)that the representations and warranties of PifCo in this Underwriting Agreement and in any of the other Transaction Documents to which PifCo is a party are true and correct in all material respects on and as of the

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Closing Date with the same effect as if made on the Closing Date, and PifCo has complied with all the agreements and satisfied all the conditions on its part to be performed or satisfied hereunder at or prior to the Closing Date;

(iv)that since the date of the most recent financial statements included in the Final Offering Document (exclusive of any amendment or supplement thereto), there has been no material adverse change in the condition (financial or otherwise), prospects, earnings, business or properties of PifCo and its subsidiaries, taken as a whole, whether or not arising from transactions in the ordinary course of business, except as set forth in or contemplated by the Final Offering Document (exclusive of any amendment or supplement thereto);

(v)that no Default or Event of Default (or other event that with the passage of time or notice, or both, will ripen into a Default or an Event of Default) under the Notes or the Indenture has occurred and is continuing as of the Closing Date;

(vi)as to the incumbency of the officers or representatives of PifCo signing the applicable Transaction Documents and the other documents delivered hereunder and thereunder on behalf of PifCo and containing specimen signatures thereof;

(vii)that the Memorandum and Articles of Association of PifCo have not been amended and is in full force and effect, copies of which shall be attached to such certificate; and

(viii)that the copy of the Original Indenture attached to the certificate is a true and correct copy thereof.

(i)Petrobras shall have furnished to the Underwriters a certificate, signed by an authorized officer of Petrobras acceptable to the Underwriters, dated the Closing Date and in form and substance reasonably satisfactory to the Underwriters, certifying:

(i)that the representations and warranties of Petrobras in this Underwriting Agreement and any of the other Transaction Documents to which it is a party are true and correct in all material respects on and as of the Closing Date with the same effect as if made on the Closing Date, and Petrobras has complied with all the agreements and satisfied all the conditions on its part to be performed or satisfied hereunder at or prior to the Closing Date;

(ii)that since the date of the most recent financial statements included in the Final Offering Document (exclusive of any amendment or supplement thereto), there has been no material adverse change in the condition (financial or otherwise), prospects, earnings, business or properties of Petrobras and its subsidiaries, taken as a whole, whether or not arising from transactions in the

22

ordinary course of business, except as set forth in or contemplated by the Final Offering Document (exclusive of any amendment or supplement thereto);

(iii)that no Default or Event of Default (or other event that with the passage of time or notice, or both, will ripen into a Default or an Event of Default) has occurred and is continuing as of the Closing Date under the Notes or the Indenture;

(iv)as to the incumbency of the officers or representatives of Petrobras signing the applicable Transaction Documents and the other documents delivered hereunder and thereunder on behalf of Petrobras and containing specimen signatures thereof; and

(v)that the Estatuto Social of Petrobras has not been amended and is in full force and effect, copies of which shall be attached to such certificate.

(j)The Trustee shall have furnished to the Underwriters a certificate of the Trustee, signed by an authorized officer of the Trustee acceptable to the Underwriters, dated the Closing Date, (i) stating that the Trustee is a banking corporation organized and validly existing under the laws of the State of New York and that its principal office and place of business is not located in the Cayman Islands or Brazil, (ii) regarding the authority of the Trustee to enter into the Transaction Documents to which it is a party and to execute all documents related thereto and (iii) regarding the incumbency of its officers executing such documents.

(k)Subsequent to the date hereof and on or prior to the Closing Date, there shall not have been any decrease in the rating of any of the Companies’ debt securities by any “nationally recognized statistical rating organization” (as defined for the purposes of Rule 436(g) under the Securities Act) or any notice given of any intended or potential decrease in any such rating or of a possible change in any such rating that does not indicate the direction of such possible change, or any withdrawal of any such rating.

(l)Subsequent to the date hereof and on or prior to the closing of the issuance of the Notes, no legislation shall have been enacted by either house of the United States or Brazilian congress or any national legislative body in the Cayman Islands or by any state legislature, no other action shall have been taken by any Governmental Authority, whether by order, regulation, rule, ruling or otherwise, and no decision shall have been rendered by any court of competent jurisdiction in the United States, Brazil, the Cayman Islands or any other country, which would have a Material Adverse Effect.

(m)On the Closing Date, none of the events listed below shall have occurred and be continuing:

(i)a default in the performance or observance by the Companies of any covenant or agreement made by it under this Underwriting Agreement or any other Transaction Document to which they are a party; or

23

(ii)proceedings shall have been commenced against either of the Companies or the Trustee under any Brazilian, United States, Cayman Islands or other bankruptcy act or other foreign, federal or state law relating to bankruptcy or insolvency or laws relating to the relief of debtors, readjustments of indebtedness, reorganizations, arrangements, compositions or extensions, or appointing a receiver or decreeing or ordering the winding up or liquidation of the affairs of either Company or the Trustee or similar proceedings for any relief which includes or might result in, any material modification of the obligations of either Company or the Trustee hereunder or under the applicable Transaction Documents; or

(iii)either Company or the Trustee shall have instituted proceedings to be adjudicated insolvent or a bankrupt or shall have consented to the institution of bankruptcy or insolvency proceedings against it or shall have filed a petition or answer or consent seeking reorganization or relief under any Brazilian, United States, Cayman Islands or other bankruptcy act or any other federal or state law relating to bankruptcy or insolvency or shall have consented to the appointment of a receiver or shall have made an assignment for the benefit of creditors or shall have admitted in writing its inability to pay its debts.

(n)Subsequent to the date hereof and on or prior to the Closing Date or, if earlier, the dates as of which information is given in the Final Offering Document (exclusive of any amendment or supplement thereto), there shall not have been (i) any material change or decrease in any of the financial line items specified in the letter or letters referred to in paragraph (e) of this Section 6 or (ii) any change, or any development involving a prospective change, in or affecting the condition (financial or otherwise), prospects, earnings, business or properties of the Companies and their subsidiaries, taken as a whole, whether or not arising from transactions in the ordinary course of business, except as set forth or contemplated in the Final Offering Document (exclusive of any amendment or supplement thereto) the effect of which, in any case referred to in clause (i) or (ii) above, is, in the judgment of the Underwriters, so material and adverse as to make it impractical or inadvisable to market the Notes as contemplated by the Final Offering Document (exclusive of any amendment or supplement thereto).

(o)The Underwriters shall have received from Cleary Gottlieb Steen & Hamilton LLP, special United States counsel to the Companies, an opinion (including a disclosure letter covering the Final Offering Document), dated the Closing Date and addressed to the Underwriters, in form and substance reasonably acceptable to the Underwriters.

(p)The Underwriters shall have received from Walkers, Cayman Islands counsel to the Companies, an opinion, dated the Closing Date and addressed to the Underwriters, in form and substance reasonably acceptable to the Underwriters.

(q)The Underwriters shall have received an opinion (including a disclosure opinion covering the Final Offering Document) of internal counsel to Petrobras, dated the

24

Closing Date and addressed to the Underwriters, in form and substance reasonably acceptable to the Underwriters.

(r)The Underwriters shall have received an opinion of Pryor Cashman LLP, external New York counsel to the Trustee, dated the Closing Date and addressed to the Underwriters, in form and substance reasonably acceptable to the Underwriters.

(s)The Underwriters shall have received an opinion (including a disclosure opinion covering the Final Offering Document) of Machado, Meyer, Sendacz e Opice Advogados, special Brazilian counsel for the Underwriters, in form and substance reasonably acceptable to the Underwriters (it being understood that the Companies shall have furnished to such counsel such documents as they request for the purposes of enabling them to pass on such matters).

(t)The Underwriters shall have received an opinion (including a disclosure opinion covering the Final Offering Document) from Shearman & Sterling LLP, special United States counsel to the Underwriters, in form and substance reasonably acceptable to the Underwriters, dated the Closing Date and addressed to the Underwriters, and the Companies shall have furnished to such counsel such documents as they request for the purpose of enabling them to pass upon such matters.

(u)Prior to the Closing Date, the Companies shall have furnished to the Underwriters such further information, certificates and documents as the Underwriters may reasonably request.

(v)None of the events contemplated in Section 9 of this Underwriting Agreement shall have occurred.

If any of the conditions specified in this Section 6 shall not have been fulfilled in all material respects when and as provided in this Underwriting Agreement, or if any of the opinions and certificates mentioned above or elsewhere in this Underwriting Agreement shall not be in all material respects reasonably satisfactory in form and substance to the Underwriters and counsel for the Underwriters, this Underwriting Agreement and all obligations of the Underwriters hereunder may be canceled at, or at any time prior to, the Closing Date by the Underwriters. Notice of such cancellation shall be given to PifCo in writing or by telephone or facsimile confirmed in writing.

The documents required to be delivered by this Section 6 will be delivered at the office of Shearman & Sterling LLP, at 599 Lexington Avenue, New York, N.Y. 10022, on the Closing Date.

SECTION 7. Reimbursement of Expenses. If the sale of the Notes provided for herein is not consummated because any condition to the obligations of each Underwriter set forth in Section 6 hereof is not satisfied, because of any termination pursuant to Section 9 hereof or because of any refusal, inability or failure on the part of either of the Companies to perform any agreement herein or comply with any provision hereof other than by reason of a default by any

25

Underwriter, the Companies will reimburse the Underwriters on demand for all properly documented out-of-pocket expenses (including the fees and disbursements of counsel) that shall have been incurred by them in connection with the proposed purchase and sale of the Notes; provided, however that if any Underwriter resigns without having good commercial reasons for resigning (having regard to good international capital markets practice), then the Companies shall be under no obligation to reimburse such expenses. The Companies’ liability to the Underwriters under this Section 7 is joint and several.

SECTION 8. Indemnification and Contribution. (a)  The Companies jointly and severally agree to indemnify and hold harmless each Underwriter, the directors, officers, employees and agents of each Underwriter and each person who controls any of the Underwriters within the meaning of either the Securities Act or the Exchange Act against any and all losses, claims, damages or liabilities, joint or several, to which they or any of them may become subject under the Securities Act, the Exchange Act or other federal or state statutory law or regulation, at common law or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon (i) any untrue statement or alleged untrue statement of a material fact contained in (A) the Registration Statement at the effective date thereof and as of the date of any amendment thereof or supplement thereto or (B) the Disclosure Package as of the date thereof, the Closing Date (including, for this purpose, documents incorporated by reference therein), the date of any amendment thereof or supplement thereto and as of any date delivery thereof is required under applicable law, or (C) the Final Offering Document, or in any amendment thereof or supplement thereto, in each case as of the date thereof, the Closing Date (including, for this purpose, documents incorporated by reference therein), the date of any amendment thereof or supplement thereto and as of any date delivery thereof is required under applicable law or (ii) the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, and agrees to reimburse each such indemnified party, as incurred, for any properly documented legal or other expenses reasonably incurred by them in connection with investigating or defending any such loss, claim, damage, liability or action; provided, however, that the Companies will not be liable in any such case to the extent that any such loss, claim, damage or liability arises out of or is based upon any such untrue statement or alleged untrue statement or omission or alleged omission made in the Disclosure Package and the Final Offering Document, or in any amendment thereof or supplement thereto, in reliance upon and in conformity with written information furnished to the Companies by or on behalf of any Underwriter specifically for inclusion therein (which shall consist of solely the information in the first and sixth paragraph under the caption “Plan of Distribution” in the Prospectus Supplement). This indemnity agreement will be in addition to any liability which the Companies may otherwise have.

(b)Each Underwriter agrees severally and not jointly to indemnify and hold harmless the Companies, each of their directors, officers, employees and agents, and each person who controls the Companies within the meaning of either the Securities Act or the Exchange Act, to the same extent (subject to the proviso set forth below) as the foregoing indemnity from the Companies to the Underwriters, but only with reference to written information furnished to the Companies by or on behalf of any Underwriter specifically for inclusion in the Disclosure Package and the Final Offering Document (or in any amendment or supplement thereto) (which

26

shall consist of solely the information in the fifth paragraph under the caption “Plan of Distribution” in the Prospectus Supplement) provided that the Underwriters’ aggregate liability to the parties set forth above shall in no event exceed the amount of the Selling Commission. This indemnity agreement will be in addition to any liability which any Underwriter may otherwise have.

(c)Promptly after receipt by an indemnified party under this Section 8 of notice of the commencement of any action, such indemnified party will, if a claim in respect thereof is to be made against the indemnifying party under this Section 8, notify the indemnifying party in writing of the commencement thereof; but the failure so to notify the indemnifying party (i) will not relieve it from liability under paragraph (a) or (b) above unless and to the extent it did not otherwise learn of such action and such failure results in the forfeiture by the indemnifying party of substantial rights and defenses and (ii) will not, in any event, relieve the indemnifying party from any obligations to any indemnified party other than the indemnification obligation provided in paragraph (a) or (b) above. The indemnifying party shall be entitled to appoint counsel of the indemnifying party’s choice at the indemnifying party’s expense to represent the indemnified party in any action for which indemnification is sought (in which case the indemnifying party shall not thereafter be responsible for the fees and expenses of any separate counsel retained by the indemnified party or parties except as set forth below); provided, however, that such counsel shall be reasonably satisfactory to the indemnified party. Notwithstanding the indemnifying party’s election to appoint counsel to represent the indemnified party in an action, the indemnified party shall have the right to employ separate counsel (including local counsel), and the indemnifying party shall bear the reasonable fees, costs and expenses of such separate counsel if (i) the use of counsel chosen by the indemnifying party to represent the indemnified party would present such counsel with a conflict of interest, (ii) the actual or potential defendants in, or targets of, any such action include both the indemnified party and the indemnifying party and the indemnified party shall have reasonably concluded that there may be legal defenses available to it and/or other indemnified parties which are different from or additional to those available to the indemnifying party, (iii) the indemnifying party shall not have employed counsel satisfactory to the indemnified party to represent the indemnified party within a reasonable time after notice of the institution of such action or (iv) the indemnifying party shall authorize the indemnified party to employ separate counsel at the expense of the indemnifying party. An indemnifying party will not, without the prior written consent of the indemnified parties, settle or compromise or consent to the entry of any judgment with respect to any pending or threatened claim, action, suit or proceeding in respect of which indemnification or contribution may be sought hereunder (whether or not the indemnified parties are actual or potential parties to such claim or action) unless (x) such settlement, compromise or judgment (i) includes an unconditional release of the indemnified party from all liability arising out of such claim, investigation, action or proceeding and (ii) does not include a statement as to or an admission of fault, culpability or any failure to act, by or on behalf of the indemnified party, and (y) the indemnifying party confirms in writing its indemnification obligations hereunder with respect to such settlement, compromise or judgment.

(d)In the event that the indemnity provided in paragraph (a) or (b) of this Section 8 is unavailable to or insufficient to hold harmless an indemnified party for any reason, the Companies and each Underwriter agrees to contribute to the aggregate losses, claims, damages

27

and liabilities (including legal or other expenses reasonably incurred in connection with investigating or defending same) (collectively, “Losses”) to which the Companies and the Underwriters may be subject in such proportion as is appropriate to reflect the relative benefits received by the Companies (on the one hand) and by the Underwriters (on the other) from the offering of the Notes. If the allocation provided by the immediately preceding sentence is unavailable for any reason, the Companies and each Underwriter shall contribute in such proportion as is appropriate to reflect not only such relative benefits but also the relative fault of the Companies (on the one hand) and each of the Underwriters (on the other) in connection with the statements or omissions which resulted in such Losses, as well as any other equitable considerations. Benefits received by the Companies shall be deemed to be equal to the total net proceeds from the offering (before deducting expenses) received by PifCo, and benefits received by the Underwriters shall be deemed to be equal to the total amount of the Underwriters’ Selling Commission. Relative fault shall be determined by reference to, among other things, whether any untrue or any alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information provided by the Companies (on the one hand) or any Underwriter (on the other), the intent of the parties and their relative knowledge, access to information and opportunity to correct or prevent such untrue statement or omission. Each of the Companies and the Underwriters agrees that it would not be just and equitable if contribution pursuant to this Section 8 were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation which does not take account of the equitable considerations referred to in subsection (c) above. Notwithstanding the provisions of this paragraph (d), no person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. For purposes of this Section 8, each person who controls the Underwriters within the meaning of either the Securities Act or the Exchange Act and each director, officer, employee and agent of any Underwriter shall have the same rights to contribution as such Underwriter, and each person who controls either of the Companies within the meaning of either the Securities Act or the Exchange Act and each officer and director of either of the Companies shall have the same rights to contribution as the Companies, subject in each case to the applicable terms and conditions of this paragraph (d). Notwithstanding the provisions of this Section 8, no Underwriter shall be required to contribute any amount in excess of the amount by which such Underwriter’s total Selling Commission exceeds the amount of any damage which such Underwriter has otherwise been required to pay by reason of such untrue statement or alleged untrue statement or omission or alleged omission. The Underwriters’ respective obligations to contribute pursuant to this Section 8(d) are several in proportion to the respective number of Notes they have purchased hereunder, and not joint.

(e)The liability of each of the Companies under this Section 8 is joint and several.

SECTION 9. Termination. This Underwriting Agreement shall be subject to termination in the absolute discretion of the Underwriters, by notice given to the Companies prior to delivery of and payment for the Notes, if at any time prior to such time (i) trading in any of the Companies’ securities shall have been suspended bythe São Paulo Stock Exchange or trading in securities generally on the New York Stock Exchange or the São Paulo Stock Exchange shall have been suspended or limited or minimum prices shall have been established on either such exchanges, or

28

(ii) a banking moratorium shall have been declared either by Federal or New York State authorities or by the relevant banking authorities in Brazil or the Cayman Islands or if any material disruption in commercial banking or securities settlement or clearance services shall have occurred, or (iii) any downgrading shall have occurred in either of the Companies’ corporate credit rating or the rating accorded either of the Companies’ debt securities by any “nationally recognized statistical rating organization” (as defined for purposes of Rule 436(g) under the Securities Act) or if any such organization shall have publicly announced that it has under surveillance or review, with possible negative implications, its rating of any of the Companies debt securities, or (iv) there shall have occurred any outbreak or escalation of hostilities, declaration by the United States or Brazil of a national emergency or war or other calamity (including any terrorist act) or any crisis the effect of which on financial markets is such as to make it, in the sole judgment of the Underwriters, impracticable or inadvisable to proceed with the offering or delivery of the Notes as contemplated by the Final Offering Document (exclusive of any amendment or supplement thereto).

SECTION 10. Representations and Indemnities to Survive. The respective agreements, representations, warranties, indemnities and other statements of each of the Companies or their officers and of the Underwriters set forth in or made pursuant to this Underwriting Agreement will remain in full force and effect, regardless of any investigation made by or on behalf of any Underwriter or the Companies or any of the officers, directors or controlling persons referred to in Section 8 hereof, and will survive delivery of and payment for the Notes. The provisions of Sections 7 and 8 hereof shall survive the termination or cancellation of this Underwriting Agreement.

SECTION 11. Notices. All communications hereunder will be in writing and effective only on receipt, and, if sent to Citi, will be mailed, delivered or telefaxed at (646) 291-5209 to Citi, c/o Citigroup Global Markets Inc., 388 Greenwich Street, New York, NY 10013, Attention: General Counsel; if sent to UBS, will be mailed, delivered or telefaxed to UBS, UBS Securities LLC, 299 Park Avenue, New York, NY 10171, Attention: Jason Norton, General Counsel; if sent to PifCo, will be mailed, delivered or telefaxed to PifCo, Avenida República do Chile 65, Rio de Janeiro, RJ 20035-900, Brazil, 20035-901, Attention: Wilson de Oliveira Senna, Financings, Leasing and Corporate Loans Manager, or, if sent to Petrobras, will be mailed, delivered or telefaxed to Petrobras, Avenida República do Chile 65, Rio de Janeiro, RJ 20035-900, Brazil, 20035-901, Attention: Wilson de Oliveira Senna, Financings, Leasing and Corporate Loans Manager.

SECTION 12. Successors. This Underwriting Agreement will inure to the benefit of and be binding upon the parties hereto and their respective successors and the officers and directors and controlling persons referred to in Section 8 hereof, and, except as expressly set forth in Section 5(h) hereof, no other person will have any right or obligation hereunder.

SECTION 13. Jurisdiction. Each of PifCo, Petrobras and the Underwriters agrees that any suit, action or proceeding against them, arising out of or based upon this Underwriting Agreement or the transactions contemplated hereby, may be instituted in any State or federal court in the Borough of Manhattan, City of New York, New York, or in the competent courts of their own corporate domiciles with respect to actions brought against any of them as a

29

defendant, and waive any objection which they may now or hereafter have to the laying of venue of any such proceeding and any right to which any of them may be entitled on account of places of residence or domicile, and irrevocably submit to the jurisdiction of such courts in any suit, action or proceeding. The Companies have appointed the New York office of Petrobras, located at 570 Lexington Avenue, 43rd Floor, New York, New York 10022 as its authorized agent (the “Authorized Agent”) upon whom process may be served in any suit, action or proceeding arising out of or based upon this Underwriting Agreement or the transactions contemplated herein which may be instituted in any State or federal court in the City of New York, New York, by any Underwriter, the directors, officers, employees and agents of any Underwriter, or by any person who controls any Underwriter, and expressly accepts the jurisdiction of any such court in respect of any such suit, action or proceeding. The Companies hereby jointly and severally represent and warrant that the Authorized Agent has accepted such appointments and has agreed to act as said agent for service of process, and the Companies agree to take any and all action, including the filing of any and all documents that may be necessary to continue such appointment in full force and effect as aforesaid. Subject to applicable law, service of process upon the Authorized Agent shall be deemed, in every respect, effective service of process upon each of the Companies.

SECTION 14. Governing Law. This Underwriting Agreement will be governed by and construed in accordance with the laws of the State of New York.

SECTION 15. Currency. Each reference in this Underwriting Agreement to U.S. dollars is of the essence. To the fullest extent permitted by law, the obligation of PifCo in respect of any amount due under this Underwriting Agreement will, notwithstanding any payment in any other currency (whether pursuant to a judgment or otherwise), be discharged only to the extent of the amount in U.S. dollars that the party entitled to receive such payment may, in accordance with its normal procedures, purchase with the sum paid in such other currency (after any premium and costs of exchange) on the Business Day immediately following the day on which such party receives such payment. If the amount in U.S. dollars that may be so purchased for any reason falls short of the amount originally due, the applicable Company will pay such additional amounts, in U.S. dollars, as may be necessary to compensate for the shortfall. Any obligation of the Companies not discharged by such payment will, to the fullest extent permitted by applicable law, be due as a separate and independent obligation and, until discharged as provided herein, will continue in full force and effect.

SECTION 16. Waiver of Immunity. This Underwriting Agreement, the other Transaction Documents and any other documents delivered pursuant hereto or thereto, and any actions taken hereunder or thereunder, constitute commercial acts by each of the Companies. Each of the Companies irrevocably and unconditionally and to the fullest extent permitted by law, waives, and agrees not to plead or claim, any immunity from jurisdiction of any court or from any legal process (whether through service or notice, attachment prior to judgment, attachment in aid of execution, execution or otherwise) for itself of any of its property, assets or revenues wherever located with respect to its obligations, liabilities or any other matter under or arising out of or in connection with this Underwriting Agreement, the other Transaction Documents, or any document delivered pursuant hereto or thereunder, in each case for the benefit of each assigns, it being intended that the foregoing waiver and agreement will be

30

effective, irrevocable and not subject to withdrawal in any and all jurisdiction, and, without limiting the generality of the foregoing, agrees that the waivers set forth in this Section 16 shall have the fullest scope permitted under the United States Foreign Sovereign Immunities Act of 1976 and are intended to be irrevocable for the purposes of such act.

SECTION 17. Counterparts. This Underwriting Agreement may be executed in one or more counterparts (including via telecopier), each of which shall constitute an original and all of which together shall constitute one and the same instrument.

SECTION 18. Entire Agreement. This Underwriting Agreement sets forth the entire agreement of the parties hereto with respect to the subject matter hereof.

SECTION 19. Headings. The section headings used herein are for convenience only and shall not affect the construction hereof.

SECTION 20. No Fiduciary Relationship. The Companies hereby acknowledge that the Underwriters are acting solely as underwriters in connection with the purchase and sale of the PifCo securities. The Companies further acknowledge that the Underwriters are acting pursuant to a contractual relationship created solely by this agreement entered into on an arm’s length basis, and in no event do the parties intend that the Underwriters act or be responsible as a fiduciary to the Companies, their respective management, stockholders or creditors or any other person in connection with any activity that the Underwriters may undertake or have undertaken in furtherance of the purchase and sale of the Companies’ securities, either before or after the date hereof. The Underwriters hereby expressly disclaim any fiduciary or similar obligations to the Companies, either in connection with the transactions contemplated by this Underwriting Agreement or any matters leading up to such transactions, and the Companies hereby confirm their understanding and agreement to that effect. The Companies and the Underwriters agree that they are responsible for making their own independent judgments with respect to any such transactions and that any opinions or views expressed by the Underwriters to the Companies regarding such transactions, including, but not limited to, any opinions or views with respect to the price or market for the Companies’ securities, do not constitute advice or recommendations to the Companies. The Companies hereby waive, to the fullest extent permitted by law, any claims that they may have against the Underwriters with respect to any breach or alleged breach of any fiduciary or similar duty to either of the Companies in connection with the transactions contemplated by this Underwriting Agreement or any matters leading up to such transactions.

SECTION 21. Miscellaneous. UBS, an indirect, wholly owned subsidiary of UBS AG, is not a bank and is separate from any affiliated bank, including any U.S. branch or agency of UBS AG. Because UBS is a separately incorporated entity, it is solely responsible for its own contractual obligations and commitments, including obligations with respect to sales and purchases of securities. Securities sold, offered or recommended by UBS are not deposits, are not insured by the Federal Deposit Insurance Corporation, are not guaranteed by a branch or agency, and are not otherwise an obligation or responsibility of a branch or agency.

[Remainder of page intentionally left blank]

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If the foregoing is in accordance with your understanding of our agreement, please sign and return to us the enclosed duplicate hereof, whereupon this Underwriting Agreement and your acceptance shall represent a binding agreement among PifCo, Petrobras and the Underwriters.

Very truly yours,

PETROBRAS INTERNATIONAL FINANCE COMPANY

By:     /s/ Sérvio Túlio da R. Tinoco     

Name: Sérvio Túlio da R. Tinoco

Title: Financial Manager

PETRÓLEO BRASILEIRO S.A. — PETROBRAS

By:     /s/ Almir Guilheme Barbassa                   

Name: Almir Guilheme Barbassa

Title:

WITNESSES:

1.              /s/ Bianca Nasser Patrocínio
	Name: Bianca Nasser Patrocínio

2.              /s/ Guilheme Ribeiro
	Name: Guilheme Ribeiro

1

The foregoing Underwriting Agreement is hereby

confirmed and accepted as of the

date first above written.

Citigroup Global Markets Inc.

By: /s/Alexander B. Severino      

Name: Alexander B. Severino

Title: Managing Director

2

The foregoing Underwriting Agreement is hereby

confirmed and accepted as of the

date first above written.

UBS Securities LLC

By:     /s/ Marcelo Delmar      

Name: Marcelo Delmar

Title: Managing Director, Latin American - Debt Capital Markets

By:     /s/ Antonio Castaña    

Name:Antonio Castaña

Title: E. Director

Acting on behalf of itself and as the representative of Itaú Europa, S.A. – London Branch.

1.               /s/ Gisele Remy
	Name: Gisele Remy

2.               /s/ Lesley M. Chin
	Name: Lesley M. Chin

3

Schedule A

Permitted Free Writing Prospectuses

• The Final Term Sheet, as defined in Section 5(j) herein, for the 5.875% Global Notes due 2018.

• Electronic (Bloomberg) road show of PifCo relating to the offering of the Notes dated October 29, 2007.

4

Schedule B

Aggregate Principal Amount of Notes

Citi	US$475,000,000
UBS	US$475,000,000
Itaú	US$50,000,000

5

Schedule C

Form of Final Term Sheet

A preliminary prospectus supplement of Petrobras International Finance Company accompanies this free writing prospectus and is available from the SEC's website at www.sec.gov.

Issuer: Petrobras International Finance Company, or “PifCo,” with Standby Purchase Agreement of Petróleo Brasileiro S.A.--Petrobras

Form: Senior Unsecured Notes

Offering: SEC Registered

Coupon: 5.875%

Yield to Maturity: 6.059%

Spread to Benchmark Treasury: + 167 basis points

Benchmark Treasury (yield): 4.75% due August 2017 (4.389%)

Public Offering Price: 98.612%

Maturity: March 1, 2018

Amount: US$1,000,000,000 (Petrobras reserves the right to increase the aggregate principal amount by US$75 million after pricing during Asian hours)

Issue Denominations: Minimum denominations of U.S.$2,000 and integral multiples of U.S.$1,000 in excess thereof

Cusip #: 71645WAM3

ISIN #: US71645WAM38

Interest Payment Dates: March 1 and September 1 of each year, commencing on March 1, 2008

Net proceeds before expenses: Approximately $983,120,000

Pricing Date: October 29, 2007

Settlement Date: November 1, 2007 (T+ 3)

Ratings: Baa1 Stable (Moody’s); BBB- Stable (S&P); BBB- Stable (Fitch)

Joint Bookrunners: Citi, UBS Investment Bank

Co-Managers: Itaú

The security ratings above are not a recommendation to buy, sell or hold the securities offered hereby. The ratings may be subject to revision or withdrawal at any time by Moody’s and Fitch Ratings. Each of the security ratings above should be evaluated independently of any other security rating

The issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus or any prospectus supplement for this offering if you request it by calling Citi collect at 1-877-858-5407, Itaú at 55-11-3708-8717 or UBS Investment Bank toll free at 1-203-719-3000.

6

STATE OF NEW YORK	)
	)	ss:
COUNTY OF NEW YORK	)

On this 29th day of October 2007 before me, a notary public within and for said county, personally appeared __________________ and _____________, to me personally known who being duly sworn, did say that they are each a ________________ and a _______________, respectively of Citigroup Global Markets Inc., one of the persons described in and which executed the foregoing instrument, and acknowledge said instrument to be the free act and deed of said corporation.

On this 29th day of October 2007, before me personally came _________________ and ________________ to me personally known, who being by me sworn, did depose and say that they signed their names to the foregoing instrument as witnesses.

[Notarial Seal]

Notary Public

COMMISSION EXPIRES

9

STATE OF NEW YORK	)
	)	ss:
COUNTY OF NEW YORK	)

On this 29th day of October 2007 before me, a notary public within and for said county, personally appeared __________________ and _____________, to me personally known who being duly sworn, did say that they are each a ________________ and a _______________, respectively of UBS Securities LLC., one of the persons described in and which executed the foregoing instrument, and acknowledge said instrument to be the free act and deed of said corporation.

On this 29th day of October 2007, before me personally came _________________ and ________________ to me personally known, who being by me sworn, did depose and say that they signed their names to the foregoing instrument as witnesses.

[Notarial Seal]

Notary Public

COMMISSION EXPIRES

10

STATE OF NEW YORK	)
	)	ss:
COUNTY OF NEW YORK	)

On this 29th day of October 2007 before me, a notary public within and for said county, personally appeared __________________ and _____________, to me personally known who being duly sworn, did say that they are each a ________________ and a _______________, respectively of Banco Itaú Europa, S.A., one of the persons described in and which executed the foregoing instrument, and acknowledge said instrument to be the free act and deed of said corporation.

On this 29th day of October 2007, before me personally came _________________ and ________________ to me personally known, who being by me sworn, did depose and say that they signed their names to the foregoing instrument as witnesses.

[Notarial Seal]

Notary Public

COMMISSION EXPIRES

11

STATE OF NEW YORK	)
	)	ss:
COUNTY OF NEW YORK	)

On this 29th day of October 2007, before me personally came _________________ to me known, who, being by me duly sworn, did depose and say that he is the ____________________ of Petróleo Brasileiro S.A. – Petrobras and the ____________________ of Petrobras International Finance Company - PifCo, each a corporation described in and which executed the foregoing instrument and acknowledges said instrument to be the free act and deed of said entities.

On this 29th day of October 2007, before me personally came _________________ and ________________ to me personally known, who being by me sworn, did depose and say that they signed their names to the foregoing instrument as witnesses.

[Notarial Seal]

Notary Public

COMMISSION EXPIRES

12

EX-4.1

Exhibit 4.1 

STANDBY PURCHASE AGREEMENT

Dated as of November 1, 2007

Between

PETRÓLEO BRASILEIRO S.A.—PETROBRAS,

as Standby Purchaser,

and

THE BANK OF NEW YORK, as

Trustee for the Noteholders

Referred to Herein

Table of Contents

Page

SECTION 1.	Definitions		2
SECTION 2.	Partial Purchase Obligation	11
SECTION 3.	Total Purchase Obligation.	12
SECTION 4.	Obligations Absolute	14
SECTION 5.	Independent Obligation	15
SECTION 6.	Waivers and Acknowledgments	15
SECTION 7.	Claims Against the Issuer	16
SECTION 8.	Payments Free and Clear of Taxes, Etc.	17
SECTION 9.	Representations and Warranties	18
SECTION 10.	Covenants	25
SECTION 11.	Amendments, Etc.	28
SECTION 12.	Notices, Etc.	28
SECTION 13.	No Waiver; Remedies	29
SECTION 14.	Indemnification	29
SECTION 15.	Subordination	30

SECTION 16. Continuing Agreement, Assignment of Rights Under the Indenture and the Notes     31

SECTION 17.	Currency Rate Indemnity	31
SECTION 18.	Governing Law; Jurisdiction; Waiver of Immunity, Etc.	32
SECTION 19.	Execution in Counterparts	33
SECTION 20.	Pledge of Interests	34
SECTION 21.	Entire Agreement	34

STANDBY PURCHASE AGREEMENT

STANDBY PURCHASE AGREEMENT (this “Agreement”), dated as of November 1, 2007, between PETRÓLEO BRASILEIRO S.A.—PETROBRAS (the “Standby Purchaser”), a sociedade do economia mista organized and existing under the laws of the Federative Republic of Brazil (“Brazil”), and THE BANK OF NEW YORK, a New York banking corporation, as trustee for the holders of the Notes (as defined below) issued pursuant to the Indenture (as defined below) (the “Trustee”).

WITNESSETH:

WHEREAS, Petrobras International Finance Company, a Cayman Islands limited company and a wholly-owned Subsidiary of the Standby Purchaser (the “Issuer”), has entered into an Indenture dated as of December 15, 2006 (the “Original Indenture”) with the Trustee, as supplemented by the First Supplemental Indenture among the Issuer, the Standby Purchaser and the Trustee dated as of the date hereof (the “First Supplemental Indenture”). The Original Indenture, as supplemented by the First Supplemental Indenture, and as amended or supplemented from time to time with respect to the Notes, is hereinafter referred to as the “Indenture.”

WHEREAS, the Issuer has duly authorized the issuance of its notes in such principal amount or amounts as may from time to time be authorized in accordance with the Indenture and is, on the date hereof, issuing US$1,000,000,000 of its 5.875% Global Notes due 2018 under the Indenture (the “Notes”);

WHEREAS, the Standby Purchaser is willing to enter into this Agreement in order to provide the holders of the Notes (the “Noteholders”) with assurances that, if the Issuer shall fail to make all required payments of principal, interest or other amounts due in respect of the Notes and the Indenture, the Standby Purchaser will be obligated, without any action on the part of the Noteholders, to immediately purchase the rights of the Noteholders to receive such amounts in consideration of the payment by the Standby Purchaser of an amount of funds equal to the amounts then owed by the Issuer under the Indenture and the Notes, subject to the provisions hereof;

WHEREAS, the Standby Purchaser agrees that it will derive substantial direct and indirect benefits from the issuance of the Notes by the Issuer;

WHEREAS, although the following shall not in any way be a condition to the obligations of the Standby Purchaser hereunder, the Standby Purchaser intends (but is not obligated hereunder) to enter into and maintain at all times during the term of this Agreement arrangements for the import of oil and petroleum products with the Issuer under which payments for such products are expected to be (i) in an aggregate amount at least equal to the total amount owed by the Issuer under the Indenture and the Notes (including any accrued and unpaid interest

and any other amounts required to be paid thereunder), (ii) made through the Brazilian commercial rate exchange market regulated by Banco Central do Brasil and (iii) applied to off-set (or be used to otherwise liquidate) any amounts required to be paid by the Standby Purchaser under this Agreement in respect of any obligation owed by the Issuer under the Indenture and the Notes;

WHEREAS, it is a condition precedent to the issuance of the Notes that the Standby Purchaser shall have executed this Agreement.

NOW, THEREFORE, the Standby Purchaser and the Trustee hereby agree as follows:

SECTION 1.Definitions. (a) As used herein the following capitalized terms shall have the following meanings:

“Affiliate,” with respect to any Person, means any other Person that, directly or indirectly, controls, is controlled by or is under common control with such Person; it being understood that for purposes of this definition, the term “control” (including the terms “controlling,” “controlled by” and “under common control with”) of a Person shall mean the possession, direct or indirect, of the power to vote 25% or more of the equity or similar voting interests of such Person or to direct or cause the direction of the management and policies of such Person, whether through the ownership of voting securities, by contract or otherwise.

“Agreement” has the meaning set forth in the preamble to this Agreement.

“Authorized Representative” of the Standby Purchaser or any other Person means the person or persons authorized to act on behalf of such entity by its chief executive officer, president, chief operating officer, chief financial officer or any vice president or its Board of Directors or any other governing body of such entity.

“Bankruptcy Law” has the meaning specified in Section 15(a).

“Base Prospectus” has the meaning set forth in the definition of Registration Statement herein.

“Board of Directors”, when used with respect to a corporation, means either the board of directors of such corporation or any committee of that board duly authorized to act for it, and when used with respect to a limited liability company, partnership or other entity other than a corporation, any Person or body authorized by the organizational documents or by the voting equity owners of such entity to act for them.

“Brazil” has the meaning set forth in the preamble to this Agreement.

“Business Day” means any day except a Saturday, a Sunday or a legal holiday or a day on which banking institutions (including, without limitation, the members of the Federal Reserve System) are authorized or required by law, regulation or executive order to close in The City of New York, the Issuer’s jurisdiction of incorporation or Brazil.

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“Closing Date” means November 1, 2007.

“Companies” means the Issuer and the Standby Purchaser.

“Default” has the meaning set forth in the Indenture.

“Default Rate” has the meaning specified in the Indenture.

“Denomination Currency” has the meaning specified in Section 17(b).

“Event of Default” has the meaning specified in the Indenture.

“Exchange Act” means the Securities Exchange Act of 1934, as amended.

“Final Offering Document” has the meaning specified in Section 9(c).

“First Supplemental Indenture” has the meaning set forth in the preamble to this Agreement.

“Governmental Authority” shall mean any regulatory, administrative or other legal body, any court, tribunal or authority or any public legal entity or public agency of the Cayman Islands, Brazil, the United States of America or any other jurisdictions whether created by federal, provincial or local government, or any other legal entity now existing or hereafter created, or now or hereafter controlled, directly or indirectly, by any public legal entity or public agency of any of the foregoing.

“Guarantee” means an obligation of a person to pay the Indebtedness of another Person including without limitation:

(i)an obligation to pay or purchase such Indebtedness;

(ii)an obligation to lend money or to purchase or subscribe for shares or other securities or to purchase assets or services in order to provide funds for the payment of such Indebtedness;

(iii)an indemnity against the consequences of a default in the payment of such Indebtedness; or

(iv)       any other agreement to be responsible for such Indebtedness.

“Indebtedness” means any obligation (whether present or future, actual or contingent and including, without limitation, any Guarantee) for the payment or repayment of money which has been borrowed or raised (including money raised by acceptances and all leases which, under generally accepted accounting principles in the country of incorporation of the relevant obligor, would constitute a capital lease obligation).

“Indemnified Party” has the meaning specified in Section 14.

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“Indemnified Taxes” means any and all present or future taxes, levies, imposts, deductions, charges or withholdings of any nature imposed by Brazil, the jurisdiction of incorporation of the Issuer (or any successor), or any other jurisdiction in which the Issuer appoints a paying agent under the Indenture or any political subdivision of such jurisdictions.

“Indenture” has the meaning specified in the preamble to this Agreement.

“Issuer” has the meaning set forth in the preamble to this Agreement.

“Judgment Currency” has the meaning specified in Section 17(b).

“Law” means any constitutional provision, law, statute, rule, regulation, ordinance, treaty, order, decree, judgment, decision, certificate, holding, injunction, enforceable at law or in equity, along with the interpretation and administration thereof by any Governmental Authority charged with the interpretation or administration thereof.

“Lien” means any mortgage, pledge, lien, hypothecation, security interest or other charge or encumbrance on any property or asset, including, without limitation, any equivalent created or arising under applicable Law.

“Material Adverse Effect” means a material adverse effect on (a) the business, operations, assets, property, condition (financial or otherwise) or results of operation of the Standby Purchaser together with its consolidated Subsidiaries taken as a whole, (b) the validity or enforceability of this Agreement or any other Transaction Document or (c) the ability of the Standby Purchaser to perform its obligations under this Agreement or any other Transaction Document, or (d) the material rights or benefits available to the Noteholders or the Trustee, as representative of the Noteholders under the Indenture, this Agreement or any of the other Transaction Documents.

“Material Subsidiary” means, as to any Person, any Subsidiary of such Person which, on any given date of determination, accounts for more than 15% of Petrobras’ total consolidated assets, as such total assets are set forth on the most recent consolidated financial statements of Petrobras prepared in accordance with U.S. GAAP (or if Petrobras does not prepare financial statements in U.S. GAAP, consolidated financial statements prepared in accordance with Brazilian generally accepted accounting principles).

“Noteholders” has the meaning specified in the preamble of this Agreement.

“Notes” has the meaning specified in the preamble of this Agreement.

“Offering Documents” has the meaning specified in Section 9(a).

“Officer’s Certificate” means a certificate of an Authorized Representative of the Standby Purchaser containing, in respect of each certificate furnished with respect to a particular condition, covenant or provision of this Agreement:

(i)a statement that an Authorized Representative of the Standby Purchaser has read such covenant, condition or provision;

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(ii)a brief statement as to the nature and scope of the examination or investigation upon which the statements or opinions contained in such certificate or opinion are based;

(iii)a statement that, in the opinion of each such individual, such examination or investigation has been made as is necessary to enable such individual to express an informed opinion as to whether or not such covenant, condition or provision has been complied with; and

(iv)a statement as to whether, in the opinion of each such individual, such condition, covenant or provision has been complied with.

“Opinion of Counsel” means a written opinion of counsel from any Person either expressly referred to herein or otherwise reasonably satisfactory to the Trustee which may include, without limitation, counsel for the Standby Purchaser, whether or not such counsel is an employee of the Standby Purchaser, which opinion contains:

(i)a statement that each individual signing such opinion has read such covenant, condition or provision;

(ii)a brief statement as to the nature and scope of the examination or investigation upon which the statements or opinions contained in such opinion are based;

(iii)a statement that, in the opinion of each such individual, such examination or investigation has been made as is necessary to enable such individual to express an informed opinion as to whether or not such covenant, condition or provision has been complied with; and

(iv)a statement as to whether, in the opinion of each such individual, such condition, covenant or provision has been complied with.

“Original Indenture” has the meaning set forth in the preamble to this Agreement.

“Other Taxes” means any present or future stamp, documentary, excise, property or similar taxes, charges or levies imposed by Brazil, the jurisdiction of the Issuer, or any other jurisdiction in which the Issuer appoints a paying agent under the Indenture or any political subdivision of such jurisdictions that arise from any payment made hereunder, under the Notes or under the Transaction Documents or from the execution, delivery or registration of, performance under, or otherwise with respect to, this Agreement or any of the other Transaction Documents.

“Partial Non-Payment Amount” has the meaning specified in Section 2(a).

“Partial Non-Payment Amount With Interest” has the meaning specified in Section 2(a).

“Partial Non-Payment Due Date” has the meaning specified in Section 2(a).

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“Partial Non-Payment Overdue Interest” has the meaning specified in Section 2(a).

“Partial Non-Payment Notice” has the meaning specified in Section 2(a).

“Payment Account” has the meaning set forth in the Indenture.

“Payment Date” has the meaning set forth in the Indenture.

“Permitted Free Writing Prospectus” has the meaning set forth in the preamble to the Underwriting Agreement among the Issuer, the Standby Purchaser, Citigroup Global Markets Inc., UBS Securities LLC and Banco Itaú Europa, S.A., dated October 29, 2007 related to the offering of the Notes.

“Permitted Lien” means a:

(i)      Lien granted in respect of Indebtedness owed to the Brazilian government, Banco Nacional de Desenvolvimento Econômico e Social or any official government agency or department of Brazil or of any state or region thereof;

(ii)     Lien arising by operation of law, such as merchants’, maritime or other similar Liens arising in the Standby Purchaser’s ordinary course of business or that of any Subsidiary or Lien in respect of taxes, assessments or other governmental charges that are not yet delinquent or that are being contested in good faith by appropriate proceedings;

(iii)    Lien arising from the Standby Purchaser’s obligations under performance bonds or surety bonds and appeal bonds or similar obligations incurred in the ordinary course of business and consistent with the Standby Purchaser’s past practice;

(iv)    Lien arising in the ordinary course of business in connection with Indebtedness maturing not more than one year after the date on which such Indebtedness was originally incurred and which is related to the financing of export, import or other trade transactions;

(v)     Lien granted upon or with respect to any assets hereafter acquired by the Standby Purchaser or any Subsidiary to secure the acquisition costs of such assets or to secure Indebtedness incurred solely for the purpose of financing the acquisition of such assets, including any Lien existing at the time of the acquisition of such assets as long as the maximum amount so secured shall not exceed the aggregate acquisition costs of all such assets or the aggregate Indebtedness incurred solely for the acquisition of such assets, as the case may be;

(vi)    Lien granted in connection with the Indebtedness of a Wholly-Owned Subsidiary owing to the Standby Purchaser or another Wholly-Owned Subsidiary;

(vii)   Lien existing on any asset or on any stock of any Subsidiary prior to the acquisition thereof by the Standby Purchaser or any Subsidiary as long as such Lien is not created in anticipation of such acquisition;

6

(viii)  Lien over any Qualifying Asset relating to a project financed by, and securing Indebtedness incurred in connection with, the Project Financing of such project by the Standby Purchaser, any of the Standby Purchaser’s Subsidiaries or any consortium or other venture in which the Standby Purchaser or any Subsidiary has any ownership or other similar interest;

(ix)    Lien existing as of the date of the Indenture;

(x)     Lien resulting from the Transaction Documents;

(xi)    Lien incurred in connection with the issuance of debt or similar securities of a type comparable to those already issued by the Issuer, on amounts of cash or cash equivalents on deposit in any reserve or similar account to pay interest on such securities for a period of up to 24 months as required by any Rating Agency as a condition to such Rating Agency rating such securities investment grade or as is otherwise consistent with market conditions at such time, as such conditions are satisfactorily demonstrated to the Trustee;

(xii)   Lien granted or incurred to secure any extension, renewal, refinancing, refunding or exchange (or successive extensions, renewals, refinancings, refundings or exchanges), in whole or in part, of or for any Indebtedness secured by a Lien referred to in paragraphs (i) through (xi) above (but not paragraph (iv)), provided that such Lien does not extend to any other property, the principal amount of the Indebtedness secured by such Lien is not increased, and in the case of paragraphs (i), (ii), (iii) and (vi), the obligees meet the requirements of such paragraphs and in the case of paragraph (viii), the Indebtedness is incurred in connection with a Project Financing by the Standby Purchaser, any of the Standby Purchaser’s Subsidiaries or any consortium or other venture in which the Standby Purchaser or any Subsidiary have any ownership or other similar interests; and

(xiii)  Lien in respect of Indebtedness the principal amount of which in the aggregate, together with all Liens not otherwise qualifying as the Standby Purchaser’s Permitted Liens pursuant to clauses (i) through (xii) of this definition, does not exceed 15% of the Standby Purchaser’s consolidated total assets (as determined in accordance with U.S. GAAP) at any date as at which the Standby Purchaser’s balance sheet is prepared and published in accordance with applicable Law.

“Person” means any individual, partnership, corporation (including a business trust), limited liability company, joint stock company, trust, unincorporated association, joint venture or other entity, or a government or any political subdivision or agency thereof.

“Post Petition Interest” has the meaning specified in Section 15(b).

“Pre-Pricing Prospectus” means each preliminary prospectus supplement, in the form so furnished to the Underwriters, including the Base Prospectus, and the documents incorporated by reference therein.

“Process Agent” has the meaning specified in Section 18(c).

7

“Project Financing” of any project means the incurrence of Indebtedness relating to the exploration, development, expansion, renovation, upgrade or other modification or construction of such project pursuant to which the providers of such Indebtedness or any trustee or other intermediary on their behalf or beneficiaries designated by any such provider, trustee or other intermediary are granted security over one or more Qualifying Assets relating to such project for repayment of principal, premium and interest or any other amount in respect of such Indebtedness.

“Purchase Obligations” has the meaning specified in Section 4.

“Prospectus Supplement” has the meaning specified in Section 9(c).

“Qualifying Asset” in relation to any Project Financing means:

(i)any concession, authorization or other legal right granted by any Governmental Authority to the Standby Purchaser or any of the Standby Purchaser’s Subsidiaries, or any consortium or other venture in which the Standby Purchaser or any Subsidiary has any ownership or other similar interest;

(ii)any drilling or other rig, any drilling or production platform, pipeline, marine vessel, vehicle or other equipment or any refinery, oil or gas field, processing plant, real property (whether leased or owned), right of way or plant or other fixtures or equipment;

(iii)any revenues or claims which arise from the operation, failure to meet specifications, failure to complete, exploitation, sale, loss or damage to, such concession, authorization or other legal right or such drilling or other rig, drilling or production platform, pipeline, marine vessel, vehicle or other equipment or refinery, oil or gas field, processing plant, real property, right of way, plant or other fixtures or equipment or any contract or agreement relating to any of the foregoing or the Project Financing of any of the foregoing (including insurance policies, credit support arrangements and other similar contracts) or any rights under any performance bond, letter of credit or similar instrument issued in connection therewith;

(iv)any oil, gas, petrochemical or other hydrocarbon-based products produced or processed by such project, including any receivables or contract rights arising therefrom or relating thereto and any such product (and such receivables or contract rights) produced or processed by other projects, fields or assets to which the lenders providing the Project Financing required, as a condition therefor, recourse as security in addition to that produced or processed by such project; and

(v)shares or other ownership interest in, and any subordinated debt rights owing to the Standby Purchaser by, a special purpose company formed solely for the development of a project, and whose principal assets and business are constituted by such project and whose liabilities solely relate to such project.

“Rating Agency” means a Nationally Recognized Statistical Rating Organization as designated by the SEC Division of Market Regulation.

8

“Registration Statement” means the registration statement on Form F-3 under the Securities Act, initially dated December 18, 2006, filed with the SEC (File No. 333-139459-01) covering the registration of the Notes under the Securities Act and including the related base prospectus in the form dated December 18, 2006 (the “Base Prospectus”) at the time such registration statement was declared effective by the SEC, as amended to the date hereof (including any post-effective amendment that includes a prospectus or prospectus supplement), together with any documents incorporated by reference therein.

“SEC” means the United States Securities and Exchange Commission.

“Securities Act” means the United States Securities Act of 1933, as amended.

“Standby Purchaser” has the meaning specified in the preamble of this Agreement.

“Stated Maturity” has the meaning specified in the Indenture.

“Subordinated Obligations” has the meaning specified in Section 15.

“Subsidiary” means, as to any Person, a corporation, company, partnership or other entity of which shares of stock or other ownership interests having ordinary voting power (other than stock or such other ownership interests having such power only by reason of the happening of a contingency) to elect a majority of the Board of Directors (or similar governing body) of such corporation, partnership or other entity are at the time owned, or the management of which is otherwise controlled, directly or indirectly through one or more intermediaries, or both, by such Person. Unless otherwise qualified, all references to a “Subsidiary” or to “Subsidiaries” in this Agreement shall refer to a Subsidiary or Subsidiaries of the Standby Purchaser.

“Successor Company” has the meaning specified in Section 10(m)(i).

“Taxing Jurisdiction” has the meaning specified in Section 8(c).

“Termination Date” has the meaning specified in Section 7.

“TIA” means the United States Trust Indenture Act of 1939, as amended.

“Total Non-Payment Notice” shall have the meaning specified in Section 3(a).

“Total Non-Payment Amount” shall have the meaning specified in Section 3(a).

“Total Non-Payment Amount With Interest” has the meaning specified in Section 3(a).

“Total Non-Payment Due Date” shall have the meaning specified in Section 3(a).

“Total Non-Payment Overdue Interest” has the meaning specified in Section 3(a).

9

“Transaction Documents” means, collectively, the Indenture, the Notes and this Agreement.

“Trustee” has the meaning specified in the preamble of this Agreement.

“Underwriters” means Citigroup Global Markets Inc., UBS Securities LLC and Banco Itaú Europa, S.A., acting as such under the Underwriting Agreement.

“Underwriting Agreement” has the meaning specified in Section 9(a).

“United States” or “U.S.” means the United States of America.

“U.S. GAAP” means generally accepted accounting principles in effect in the United States of America applied on a basis consistent with the principles, methods, procedures and practices set forth in the opinions and pronouncements of the Accounting Principles Board of the American Institute of Certified Public Accountants and statements and pronouncements of the Financial Accounting Standards Board or in such other statements by such other entity as approved by a significant segment of the accounting profession.

“Wholly-Owned Subsidiary” means, with respect to any corporate entity, any person of which 100% of the outstanding capital stock (other than qualifying shares, if any) having by the terms thereof ordinary voting power (not dependent on the happening of a contingency) to elect the Board of Directors (or equivalent controlling governing body) of such person is at the time owned or controlled directly or indirectly by such corporate entity, by one or more wholly-owned Subsidiaries of such corporate entity or by such corporate entity and one or more wholly-owned Subsidiaries thereof.

(b)Construction. For all purposes of this Agreement (and for all purposes of any other Transaction Document or any other instrument or agreement that incorporates provisions of this Agreement by reference), except as otherwise expressly provided or unless the context otherwise requires:

(i)the terms defined in this Section have the meanings assigned to them in this Section, and include the plural as well as the singular;

(ii)except as otherwise expressly provided herein, (A) all accounting terms used herein shall be interpreted, (B) all financial statements and all certificates and reports as to financial matters required to be delivered to the Trustee hereunder shall be prepared and (C) all calculations made for the purposes of determining compliance with this Agreement shall (except as otherwise expressly provided herein) be made in accordance with, or by application of, U.S. GAAP;

(iii)all references in this Agreement (including the Appendices and Schedules hereto) to designated “Articles,” “Sections” and other subdivisions are to the designated Articles, Sections and other subdivisions of this Agreement;

10

(iv)the words “herein,” “hereof” and “hereunder” and other words of similar import refer to this Agreement as a whole and not to any particular Article, Section or other subdivision;

(v)unless the context clearly indicates otherwise, pronouns having a masculine or feminine gender shall be deemed to include the other;

(vi)unless otherwise expressly specified, any agreement, contract or document defined or referred to herein shall mean such agreement, contract or document as in effect as of the date hereof, as the same may thereafter be amended, supplemented or otherwise modified from time to time in accordance with the terms of this Agreement and the other Transaction Documents and shall include any agreement, contract, instrument or document in substitution or replacement of any of the foregoing entered into in accordance with the terms of this Agreement and the other Transaction Documents;

(vii)any reference to any Person shall include its permitted successors and assigns in accordance with the terms of this Agreement and the other Transaction Documents including, in the case of any Governmental Authority, any Person succeeding to its functions and capacities; and

(viii)unless the context clearly requires otherwise, references to “Law” or to any particular Law shall include Laws or such particular Law as in effect at each, every and any of the times in question, including any amendments, replacements, supplements, extensions, modifications, consolidations, restatements, revisions or reenactments thereto or thereof, and whether or not in effect at the date of this Agreement.

SECTION 2.Partial Purchase Obligation. (a) In the event that, prior to the Stated Maturity of the principal of the Notes, the Issuer shall fail to make any payment on the Notes in respect of interest, principal, premium, if any, or other amounts as contemplated in the Indenture and/or the Notes (including, without limitation, any Additional Amounts) on the date any such payment is due under the terms of the Notes and the Indenture including pursuant to any redemption or repurchase obligation of the Issuer (other than in the case of an acceleration thereof in accordance with the Indenture) (such date, the “Partial Non-Payment Due Date”), then in such event (i) the Standby Purchaser shall be obligated to purchase the rights of the Noteholders to receive such payments from the Issuer by paying immediately to the Trustee, for the benefit of the Noteholders under the Indenture, the amount that the Issuer was required to pay but failed to pay on such date under the terms of the Indenture and the Notes (the “Partial Non-Payment Amount”) and (ii) the Trustee shall provide notice to the Standby Purchaser of the failure of the Issuer to make such payment; provided, however, that the failure to provide such notice shall not in any way excuse the Standby Purchaser from its obligations hereunder. The notice contemplated herein shall be provided in writing in substantially the form of Exhibit A hereto (the “Partial Non-Payment Notice”) and shall be sent by the Trustee to the Standby Purchaser at the address specified for the Standby Purchaser in Section 12 hereof no later than 5:00 p.m. (New York time) on the Partial Non-Payment Due Date. The Partial Non-Payment Notice shall (i) confirm the Partial Non-Payment Amount and the fact that such amount was not paid on the Partial Non-Payment Due Date and (ii) remind the Standby Purchaser that it is obligated to purchase the rights of the Noteholders by paying the Partial Non-Payment Amount

11

immediately. To the extent that the Standby Purchaser fails to purchase the rights of the Noteholders to receive the Partial Non-Payment Amount immediately pursuant to this Section 2(a) (whether or not it has received the Partial Non-Payment Notice), the Standby Purchaser shall be obligated hereunder to pay, in addition to the Partial Non-Payment Amount, interest on such amount at the Default Rate from the Partial Non-Payment Due Date to and including the actual date of payment by the Standby Purchaser (the “Partial Non-Payment Overdue Interest” and such interest, if any, together with the Partial Non-Payment Amount, the “Partial Non-Payment Amount With Interest”), which date of payment shall be a Business Day. Notwithstanding anything to the contrary herein, the failure by the Trustee to deliver a Partial Non-Payment Notice as provided herein shall not release the Standby Purchaser of its obligations to pay the Partial Non-Payment Amount With Interest in the manner set forth in this Section 2(a).

(b)Payment of the Partial Non-Payment Amount With Interest shall be in consideration of the purchase by the Standby Purchaser of the rights of the Noteholders to receive such amount from the Issuer. The Noteholders shall have no right to retain such rights, and, following the purchase and sale provided for in this Section 2, the Notes shall remain outstanding with all amounts due in respect thereof adjusted to reflect the purchase, sale and payment provided for herein. Upon any such payment, the Standby Purchaser shall be subrogated to the Noteholders to the extent of any payment under this Section 2.

(c)The obligation of the Standby Purchaser to purchase the rights of the Noteholders to receive the Partial Non-Payment Amount With Interest shall be absolute and unconditional upon failure of the Issuer to make, prior to the Stated Maturity of the principal on the Notes, any payment on the Notes in respect of interest, principal or other amounts as contemplated in the Indenture and/or the Notes (including, without limitation, any Additional Amounts) on the date any such payment is due. All amounts payable by the Standby Purchaser hereunder in respect of any Partial Non-Payment Amount With Interest shall be payable in U.S. dollars and in immediately available funds to the Trustee at the account specified in Section 12 below, or to such other account as may be specified by the Trustee in the applicable Partial Non-Payment Notice. The Standby Purchaser shall not be relieved of its obligations hereunder unless and until the Trustee shall have indefeasibly received all amounts required to be paid by the Standby Purchaser hereunder (and any related Event of Default under the Indenture has been cured), including payment of the Partial Non-Payment Overdue Interest as provided for herein.

(d)All payments actually received by the Trustee pursuant to this Section 2 after 1:00 p.m. (New York time) on any Business Day will be deemed, for purposes of this Agreement, to have been received by the Trustee on the next succeeding Business Day.

SECTION 3.Total Purchase Obligation. (a) In the event that, at the Stated Maturity of the principal on the Notes (or earlier upon any acceleration thereof in accordance with the terms of the Indenture), the Issuer shall fail to make any payment in respect of principal, interest or other amounts due under the Indenture and the Notes on the date any such payment is so due (such date, the “Total Non-Payment Due Date”) then in such event, (i) the Standby Purchaser shall be obligated to purchase the rights of the Noteholders to receive such payments from the Issuer by paying immediately to the Trustee, for the benefit of the Noteholders under the Indenture, the amount that the Issuer was required to pay but failed to pay on such date under

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the terms of the Notes and the Indenture (the “Total Non-Payment Amount”) and (ii) the Trustee shall provide notice to the Standby Purchaser of the failure of the Issuer to make such payment, provided, however, that the failure to provide such notice shall not in any way excuse the Standby Purchaser from its obligations hereunder. The notice contemplated herein shall be provided in writing in substantially the form of Exhibit B hereto (the “Total Non-Payment Notice”) sent to the Standby Purchaser at the address specified for the Standby Purchaser in Section 12 hereof no later than 5:00 p.m. (New York time) on the Total Non-Payment Due Date. The Total Non-Payment Notice shall (i) confirm the amount of the Total Non-Payment Amount and the fact that such amount was not paid on the Total Non-Payment Due Date and (ii) remind the Standby Purchaser that it is obligated to purchase the rights of the Noteholders to receive the Total Non-Payment Amount immediately. To the extent that the Standby Purchaser fails to purchase the rights of the Noteholders to receive the Total Non-Payment Amount immediately when required pursuant to this Section 3(a) (whether or not it has received the Total Non-Payment Notice), the Standby Purchaser shall be obligated hereunder to pay, in addition to the amounts specified above, interest on such amount at the Default Rate from the Total Non-Payment Due Date to and including the actual date of payment by the Standby Purchaser (the “Total Non-Payment Overdue Interest” and such interest, if any, together with the Total Non-Payment Amount, the “Total Non-Payment Amount With Interest”), which date of payment shall be a Business Day. Notwithstanding anything to the contrary herein, the failure by the Trustee to deliver a Total Non-Payment Notice as provided herein shall not release the Standby Purchaser of its obligations to pay the Total Non-Payment Amount With Interest in the manner set forth in this Section 3(a).

(b)Payment of the Total Non-Payment Amount With Interest by the Standby Purchaser shall be in consideration of the purchase by the Standby Purchaser of the rights of the Noteholders to receive such amount from the Issuer. The Noteholders shall have no right to retain such rights, and, following the purchase and sale provided for in this Section 3, the Standby Purchaser shall be subrogated to the Noteholders to the extent of any payment under this Section 3.

(c)The obligation of the Standby Purchaser to purchase the rights of the Noteholders to receive the Total Non-Payment Amount With Interest shall be absolute and unconditional upon failure of the Issuer to make, at the Stated Maturity of the principal of the Notes (or earlier upon any acceleration thereof in accordance with the terms of the Indenture), any payment in respect of principal, interest or other amounts due under the Indenture and the Notes on the date any such payment is due. All amounts payable by the Standby Purchaser hereunder in respect of any Total Non-Payment Amount With Interest shall be payable in U.S. dollars and in immediately available funds to the Trustee at the account specified in Section 12 below, or to such other account as may be specified by the Trustee in the applicable Total Non-Payment Notice. The Standby Purchaser shall not be relieved of its obligations hereunder unless and until the Trustee shall have received all amounts required to be paid by it hereunder (and any related Event of Default under the Indenture has been cured), including payment of the Total Non-Payment Overdue Interest.

(d)          All payments actually received by the Trustee pursuant to this Section 3 after 1:00 p.m. (New York time) on any Business Day will be deemed, for purposes of this Agreement, to have been received by the Trustee on the next succeeding Business Day.

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SECTION 4.Obligations Absolute. The Standby Purchaser’s obligation to purchase the rights of the Noteholders right to receive one or more Partial Non-Payment Amounts With Interest or the Total Non-Payment Amount With Interest (collectively, the “Purchase Obligations”) are absolute and unconditional regardless of any law, regulation or order now or hereafter in effect in any jurisdiction affecting any of such terms or the rights of any Noteholder under its Notes or the Indenture. The Purchase Obligations and the other obligations of the Standby Purchaser under or in respect of this Agreement are independent of any obligations of the Issuer, the Issuer’s Subsidiaries or the Standby Purchaser’s Subsidiaries under or in respect of the Indenture and the Notes or any other document or agreement, and a separate action or actions may be brought and prosecuted against the Standby Purchaser to enforce this Agreement, irrespective of whether any action is brought against the Issuer or whether the Issuer is joined in any such action or actions. The liability of the Standby Purchaser under this Agreement shall be irrevocable, absolute and unconditional irrespective of, and the Standby Purchaser hereby irrevocably waives any defenses it may now have or hereafter acquire in any way relating to, any or all of the following:

(a)any lack of validity or enforceability of any of the Transaction Documents;

(b)any provision of applicable Law or regulation purporting to prohibit the payment by the Standby Purchaser of any amount payable by it under this Agreement;

(c)any change in the time, manner or place of payment of, or in any other term of, all or any of the Purchase Obligations or any other obligations of any other person or entity under or in respect of the Transaction Documents, or any other amendment or waiver of or any consent to departure from any Transaction Document, including, without limitation, any increase in the obligations of the Issuer under the Indenture and the Notes as a result of further issuances, any rescheduling of the Issuer’s obligations under the Notes or the Indenture or otherwise;

(d)any taking, release or amendment or waiver of, or consent to departure from, any other guaranty or agreement similar in function to this Agreement, for all or any of the obligations of the Issuer under the Indenture or the Notes;

(e)any manner of sale or other disposition of any assets of any Noteholder;

(f)any change, restructuring or termination of the corporate structure or existence of the Issuer or the Standby Purchaser or any Subsidiary thereof or any change in the name, purposes, business, capital stock (including ownership thereof) or constitutive documents of the Issuer or the Standby Purchaser;

(g)any failure of the Trustee to disclose to the Standby Purchaser any information relating to the business, condition (financial or otherwise), operations, performance, properties or prospects of the Issuer or any of its Subsidiaries (the Standby Purchaser hereby waiving any duty on the part of the Trustee or any Noteholders to disclose such information);

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(h)the failure of any other person or entity to execute or deliver any other Guarantee or agreement or the release or reduction of liability of any other guarantor or surety with respect to the Indenture;

(i)any other circumstance (including, without limitation, any statute of limitations) or any existence of or reliance on any representation by the Trustee or any Noteholder that might otherwise constitute a defense available to, or a discharge of, the Issuer or the Standby Purchaser or any other party; or

(j)any claim of set-off or other right which the Standby Purchaser may have at any time against the Issuer or the Trustee, whether in connection with this transaction or with any unrelated transaction.

This Agreement shall continue to be effective or be reinstated, as the case may be, if at any time any payment of any of the Purchase Obligations is rescinded or must otherwise be returned by any Noteholder or any other person or entity upon the insolvency, bankruptcy or reorganization of the Issuer or the Standby Purchaser or otherwise, all as though such payment had not been made.

SECTION 5.Independent Obligation. The obligations of the Standby Purchaser hereunder are independent of the Issuer’s obligations under the Notes and the Indenture. The Trustee, on behalf of the Noteholders, may neglect or forbear to enforce payment under the Indenture and the Notes, without in any way affecting or impairing the liability of the Standby Purchaser hereunder. The Trustee shall not be obligated to exhaust recourse or remedies against the Issuer to recover payments required to be made under the Indenture nor take any other action against the Issuer or, under any agreement, purchase any security which the Trustee may hold before being entitled to payment from the Standby Purchaser of all amounts contemplated in Sections 2 and 3 hereof owed hereunder or proceed against or have resort to any balance of any deposit account or credit on the books of the Trustee in favor of the Issuer or in favor of the Standby Purchaser. Without limiting the generality of the foregoing, the Trustee shall have the right to bring a suit directly against the Standby Purchaser, either prior or subsequent to or concurrently with any lawsuit against, or without bringing suit against, the Issuer.

SECTION 6.Waivers and Acknowledgments. (a) The Standby Purchaser hereby unconditionally and irrevocably waives promptness, diligence, notice of acceptance, presentment, demand for performance, notice of nonperformance, default, acceleration, protest or dishonor and any other notice with respect to any of the Purchase Obligations and this Agreement and any requirement that the Trustee, on behalf of the Noteholders, protect, secure, perfect or insure any Lien or any property subject thereto or exhaust any right or take any action against the Issuer or any other Person.

(b)The Standby Purchaser hereby unconditionally and irrevocably waives any right to revoke this Agreement and acknowledges that this Agreement is continuing in nature and applies to its Purchase Obligations, whether the same are existing now or in the future.

(c)The Standby Purchaser hereby unconditionally and irrevocably waives (i) any defense arising by reason of any claim or defense based upon an election of remedies by any

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Noteholder or the Trustee on behalf of the Noteholders that in any manner impairs, reduces, releases or otherwise adversely affects the subrogation, reimbursement, exoneration, contribution or indemnification rights of the Standby Purchaser or other rights of the Standby Purchaser to proceed against the Issuer or any other person or entity and (ii) any defense based on any right of set-off or counterclaim against or in respect of the Purchase Obligations of the Standby Purchaser hereunder.

(d)The Standby Purchaser hereby unconditionally and irrevocably waives any duty on the part of the Trustee or any Noteholder to disclose to the Standby Purchaser any matter, fact or thing relating to the business, condition (financial or otherwise), operations, performance, properties or prospects of the Issuer now or hereafter known by the Trustee or any Noteholder, as applicable.

(e)The Standby Purchaser acknowledges that it will receive substantial direct and indirect benefits from the financing arrangements contemplated by the Transaction Documents and that the waivers set forth in this Section 6 are knowingly made in contemplation of such benefits.

(f)The recitals contained in this Agreement shall be taken as the statements of the Issuer and the Standby Purchaser, as applicable, and the Trustee assumes no responsibility for the correctness of same. The Trustee makes no representation as to the validity or sufficiency of this Agreement, of any offering materials, the Indenture or of the Notes.

SECTION 7.Claims Against the Issuer. The Standby Purchaser hereby unconditionally and irrevocably agrees not to exercise any rights that it may now have or hereafter acquire against the Issuer or any other guarantor that arise from the existence, payment, performance or enforcement of the Standby Purchaser’s Purchase Obligations under or in respect of this Agreement or any other Transaction Document, including, without limitation, any right of subrogation, reimbursement, exoneration, contribution or indemnification and any right to enforce any rights to payments in respect of the Partial Non-Payment Amount With Interest and/or the Total Non-Payment Amount With Interest purchased by the Standby Purchaser from the Noteholders as provided hereunder, or to participate in any claim or remedy of the Trustee, on behalf of the Noteholders, against the Issuer or any other person, whether or not such claim, remedy or right arises in equity or under contract, statute or common law, including, without limitation, the right to take or receive from the Issuer or any other person, directly or indirectly, in cash or other property or by set-off or in any other manner, payment or security on account of such claim, remedy or right, unless and until all of the Purchase Obligations and all other amounts payable under this Agreement shall have been paid in full in cash. If any amount shall be paid to the Standby Purchaser in violation of the immediately preceding sentence at any time prior to the later of (a) the payment in full in cash of the Purchase Obligations and all other amounts payable under this Agreement and (b) the date on which all of the obligations of the Issuer under the Indenture and the Notes have been discharged in full (the later of such dates being the “Termination Date”), such amount shall be paid over to and received and held by the Trustee in trust for the benefit of the Noteholders, shall be segregated from other property and funds of the Standby Purchaser and shall forthwith be paid or delivered to the Trustee in the same form as so received (with any necessary endorsement or assignment) to be credited and applied to the Purchase Obligations and all other amounts payable under this Agreement,

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whether matured or unmatured, in accordance with the terms of the Indenture. If (i) the Standby Purchaser shall make payment to any Noteholder or the Trustee, on behalf of the Noteholders, of all or any part of the Purchase Obligations, (ii) all of the Purchase Obligations and all other amounts payable under this Agreement shall have been paid in full in cash and (iii) the Termination Date shall have occurred, then the Trustee, on behalf of the Noteholders, will, at the Standby Purchaser’s written request and expense, execute and deliver to the Standby Purchaser appropriate documents, without recourse and without representation or warranty, necessary to evidence the transfer by subrogation to the Standby Purchaser of an interest in the Purchase Obligations resulting from such payment made by the Standby Purchaser pursuant to this Agreement.

SECTION 8.    Payments Free and Clear of Taxes, Etc.

(a)  Any and all payments by or on account of any obligation of the Standby Purchaser hereunder or under any other Transaction Document shall be made free and clear of and without deduction for any Indemnified Taxes; provided that if the Standby Purchaser shall be required to deduct any Indemnified Taxes from such payments, then (i) the sum payable shall be increased as necessary so that after making all required deductions (including deductions applicable to additional amounts payable under this Section), the Trustee, on behalf of the Noteholders, receives an amount equal to the sum it would have received had no such deductions been made, (ii) the Standby Purchaser shall make such deductions and (iii) the Standby Purchaser shall pay the full amount deducted to the relevant Governmental Authority in accordance with applicable Law.

(b)Payment of Other Taxes by the Standby Purchaser. In addition, the Standby Purchaser shall pay any Other Taxes to the relevant Governmental Authority in accordance with applicable Law. The Standby Purchaser shall indemnify and make whole the Noteholders for any such Other Taxes payable by the Standby Purchaser under this paragraph paid by such Noteholders.

(c)Notwithstanding anything to the contrary in Section 8(a) of this Agreement, the Standby Purchaser will not be obligated to pay any Indemnified Taxes imposed with respect to the Notes due to (i) the Noteholder having a connection with the jurisdiction imposing the Indemnified Taxes (hereinafter, the “Taxing Jurisdiction”) other than from merely holding the Notes or receiving principal or interest payments on the Notes (such as citizenship, nationality, residence, domicile, or existence of a business, a permanent establishment, a dependent agent, a place of business or a place of management present or deemed present within the Taxing Jurisdiction), (ii) any tax imposed on, or measured by, net income, (iii) the Noteholder failing to comply with any certification, identification or other reporting requirements concerning its nationality, residence, identity or connection with the Taxing Jurisdiction, if (x) such compliance is required by applicable Law, regulation, administrative practice or treaty as a precondition to exemption from all or a part of the Indemnified Taxes, (y) the Noteholder is able to comply with such requirements without undue hardship and (z) at least 30 calendar days prior to the first Payment Date with respect to which such requirements under the applicable Law, regulation, administrative practice or treaty shall apply, the Standby Purchaser has notified all the Noteholders that they will be required to comply with such requirements, (iv) the Noteholder failing to present (where presentation is required) its Note

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within 30 calendar days after the Standby Purchaser has made available to the Noteholder a payment under this Agreement; provided that the Standby Purchaser will pay Indemnified Taxes which a Noteholder would have been entitled to under such Note had it been presented on any day (including the last day) within such 30 day period, (v) any estate, inheritance, gift, value added, use or sales taxes or any similar taxes, assessments or other governmental charges, (vi) such Indemnified Taxes being imposed on a payment on the Notes to an individual and are required to be made pursuant to European Union council Directive 2003/48/EC implementing the conclusions of the Economic and Financial Council of Ministers of the member states of the European Union (ECONFIN) Council meeting of November 26-27, 2000 on the taxation of savings income or any law implementing or complying with, or introduced in order to conform to, any such Directive, (vii) such Note being presented for payment by or on behalf of a Noteholder who would have been able to avoid such withholding or deduction by requesting that a payment on the Notes be made by, or presenting the relevant Notes for payment to another paying agent located in a member state of the European Union, or (viii) the payment of any obligation of the Standby Purchaser to a Noteholder who would have been able to cause the avoidance of the Indemnified Taxes by taking reasonable measures available to such Noteholder.

The Standby Purchaser shall, while European Council Directive 2003/48/EC or any other Directive implementing the conclusions of ECOFIN council meeting of November 26-27, 2000 is in force, ensure that it maintains a paying agent hereunder in a member state of the European Union that will not be obliged to withhold or deduct tax pursuant to such Directive.

(d)Evidence of Payments. As soon as practicable after any payment of Indemnified Taxes or Other Taxes by the Standby Purchaser to a Governmental Authority, the Standby Purchaser shall deliver to the Trustee the original or a certified copy of a receipt issued by such Governmental Authority evidencing such payment, a copy of the return reporting such payment or other evidence of such payment reasonably satisfactory to the Trustee.

SECTION 9.Representations and Warranties. The Standby Purchaser makes the following representations and warranties to the Trustee, on behalf of the Noteholders, all of which shall survive the execution and delivery of this Agreement:

(a)The Companies and the transactions contemplated in the Underwriting Agreement dated as of October 29, 2007 among the Standby Purchaser, the Issuer and the Underwriters (the “Underwriting Agreement”) in connection with the offer and sale of the Notes meet the requirements set forth in Form F-3 under the Securities Act for use of the Registration Statement in connection with the offering of the Notes that are the subject of this Agreement.

(b)The Standby Purchaser and the Issuer have filed the Registration Statement with the SEC, the Registration Statement has been declared effective under the Securities Act, no stop order suspending the use of any Base Prospectus, any Pre-Pricing Prospectus, the Prospectus Supplement, the Final Offering Document or any Permitted Free Writing Prospectus, or the effectiveness of the Registration Statement has been issued, and no proceedings for such purposes have been instituted or, to the best of the Companies’ knowledge, threatened by the SEC.

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(c)The Standby Purchaser and the Issuer filed with the SEC on November 1, 2007 pursuant to Rule 424(b) under the Securities Act a final form of supplement to the Base Prospectus (the “Prospectus Supplement”) dated December 18, 2006 relating to the Notes and the distribution thereof. The Base Prospectus as supplemented by the Prospectus Supplement in the form in which it was filed with the SEC pursuant to Rule 424(b), together with any documents incorporated by reference therein, is herein referred to as the “Final Offering Document”.

(d)Each of the Companies has filed all the documents required to be filed by it with the SEC pursuant to the Exchange Act, including but not limited to the annual reports on Form 20F for the year ended December 31, 2006 and Forms 6-K in connection with their respective financial statements for the three months ended March 31, 2007 and for the six months ended June 30, 2007. Each document filed or to be filed by the Companies under the Exchange Act complied and will comply when so filed in all material respects with the requirements of the Exchange Act and the applicable rules and regulations of the SEC and the documents incorporated or deemed to be incorporated by reference in the Registration Statement and the Final Offering Document, at the time they were or hereafter are filed with the SEC, complied and will comply in all material respects with the requirements of the Securities Act, the Exchange Act and the rules and regulations thereunder.

(e)The Original Indenture, First Supplemental Indenture and the Standby Purchase Agreement have been qualified under the TIA, and all filings and other actions required under the TIA to permit the use of the Indenture, the issuance of the Notes thereunder and the execution by the Standby Purchaser and the Trustee of the Standby Purchase Agreement have been made and taken prior to the date hereof.

(f)Prior to the termination of the offering of the Notes, neither the Standby Purchaser nor the Issuer has filed any amendment to the Registration Statement or supplement to the Final Offering Document which shall not have previously been furnished to the Underwriters or of which the Underwriters shall not previously have been advised or to which the Underwriters shall have reasonably objected in writing.

(g)Each of the Registration Statement, as amended, as of the time it became effective under the Securities Act, and the Final Offering Document as amended or supplemented as of the date hereof, contained and contains all disclosures required under applicable laws, including the Securities Act and the rules and regulations thereunder. Neither (i) the Registration Statement, as amended, as of the time it became effective under the Securities Act nor (ii) the Final Offering Document as amended or supplemented as of the date hereof (including, for this purpose, documents incorporated by reference therein) contains or will contain any untrue statement of a material fact or omit to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading. Notwithstanding the foregoing, the Standby Purchaser does not make any representation or warranty as to the information contained in or omitted from the Registration Statement or the Final Offering Document in reliance upon and in conformity with information furnished in writing to the Standby Purchaser and the Issuer by any Underwriter, specifically for inclusion therein, which shall consist solely of the first and sixth paragraphs under the captions “Plan of Distribution” in the Prospectus Supplement.

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(h)Neither the Issuer nor the Standby Purchaser is an “investment company” or a company “controlled by” an “investment company” as such terms are defined in the United States Investment Company Act of 1940, as amended, and the rules and regulations of the SEC promulgated thereunder. After giving effect to the offering and sale of the Notes and the application of the proceeds thereof as described in the Registration Statement and the Final Offering Document neither the Issuer nor the Standby Purchaser will be an “investment company” or a company “controlled by” an “investment company” as such terms are defined in the United States Investment Company Act of 1940, as amended, and the rules and regulations of the SEC promulgated thereunder.

(i)Neither the Standby Purchaser, nor any of its Affiliates, nor any person acting on their behalf (other than the Underwriters as to which the Standby Purchaser makes no representation or warranty), has paid or agreed to pay to any person any compensation for soliciting another to purchase (i) the Notes or (ii) any other securities of the Standby Purchaser or the Issuer within the last 90 days, except in the case of either (i) or (ii) as contemplated by the Underwriting Agreement.

(j)Neither the Standby Purchaser, nor any of its Affiliates, nor any person acting on their behalf (other than the Underwriters as to which the Standby Purchaser makes no representation or warranty), has, directly or indirectly, taken any action designed to cause or which has constituted or which might reasonably be expected to cause or result in the stabilization or manipulation of the price of any security of the Standby Purchaser or the Issuer to facilitate the initial sale or resale of the Notes under the Exchange Act, or otherwise.

(k)The Standby Purchaser has been duly organized and is validly existing as a sociedade de economia mista (mixed-capital company) in good standing (to the extent that good standing is applicable under applicable Law) under the Laws of Brazil. Each of the Standby Purchaser’s Significant Subsidiaries (as defined in Rule 12b-2 under the Exchange Act) has been duly incorporated and is validly existing as a corporation in good standing (to the extent relevant) under the Laws of the jurisdiction in which it is chartered or organized. Each of the Standby Purchaser and its Significant Subsidiaries is licensed (if and to the extent required by law) and has the full corporate power and authority to own or lease, as the case may be, and to operate its properties and to conduct its business as described in the Registration Statement and the Final Offering Document and to enter into and perform its obligations under this Agreement and the other Transaction Documents to which it is a party, and is duly qualified or licensed as a foreign corporation in good standing in each jurisdiction which requires such qualification, except, in the case of its Significant Subsidiaries other than the Issuer, where the failure to be so qualified will not have a Material Adverse Effect. The Standby Purchaser owns, directly or indirectly, all of the outstanding equity interests of the Issuer and its other Significant Subsidiaries.

(l)All the outstanding shares of capital stock, if any, of each Subsidiary of the Standby Purchaser have been duly and validly authorized and issued and are fully paid and non-assessable except, in the case of the Subsidiaries (other than the Issuer), as would not have a Material Adverse Effect, and all outstanding shares of capital stock of the Subsidiaries are owned by the Companies, as the case may be, either directly or through wholly owned Subsidiaries free

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and clear of any perfected security interest or any other security interests, claims, liens or encumbrances.

(m)The Standby Purchaser’s capitalization is as set forth in the Final Offering Document.

(n)There have been no material changes with respect to the matters disclosed in “Item 11. Qualitative and Quantitative Disclosure About Market Risk” in the Form 20-F of the Standby Purchaser for the year ended December 31, 2006, except as otherwise specified in the Final Offering Document.

(o)This Agreement has been duly authorized, executed and delivered by the Standby Purchaser; each of this Agreement, the First Supplemental Indenture and each other document executed and delivered in connection therewith to which the Standby Purchaser is party has been duly authorized and, assuming due authorization, execution and delivery thereof by each other party to those Transaction Documents (other than the Standby Purchaser), when executed and delivered by the Standby Purchaser, will constitute a legal, valid and binding agreement of the Standby Purchaser, enforceable against the Standby Purchaser in accordance with its terms (subject, as to the enforcement of remedies, to applicable bankruptcy, reorganization, insolvency, moratorium or other similar laws affecting creditors’ rights generally from time to time in effect and to general principles of equity); and the descriptions of the Transaction Documents in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document fairly summarize the rights and obligations of the parties thereto.

(p)The Notes have been duly authorized, and, when issued under the Indenture, authenticated by the Trustee and delivered to and paid for by the Underwriters pursuant to the Underwriting Agreement, will have been duly executed, issued and delivered and will constitute legal, valid and binding obligations of the Issuer, enforceable in accordance with their terms, subject, as to the enforcement of remedies, to applicable bankruptcy, reorganization, insolvency, moratorium, or other similar laws affecting creditors’ rights generally from time to time in effect and to general principles of equity and will be entitled to the benefits provided by the Indenture as described in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document.

(q)The Notes will constitute the general unsecured and unsubordinated obligations of the Issuer and will rank pari passu in priority of payment and in right of seniority with all other unsecured and unsubordinated obligations of the Issuer that are not, by their terms, expressly subordinated in right of payment to the Notes, except for statutory liens and preferences. The obligations of the Standby Purchaser under this Agreement will constitute the general unsecured and unsubordinated obligations of the Standby Purchaser and will rank paripassu in priority of payment and in right of seniority with all other unsecured and unsubordinated obligations of the Standby Purchaser that are not, by their terms, expressly subordinated in right of payment to the rights of the Trustee, except for statutory liens and preferences.

(r)No consent, approval, authorization, filing with or order of any Governmental Authority is required for (i) the valid authorization, issuance, sale and delivery of

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the Notes or (ii) the execution, delivery or performance by the Issuer and the Standby Purchaser of any of their respective obligations under any of the Transaction Documents in the manner contemplated in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document, including, without limitation, making any of the applicable payments required to be made after the date hereof under or in respect of any of the Transaction Documents, except for (i) the filing of the Prospectus Supplement pursuant to Rule 424(b) under the Securities Act, which has been effected prior to the date hereof, (ii) such consents as may be required under state or foreign securities or blue sky laws and (iii) such filings or consents as may be required by the by-laws and rules of the National Association of Securities Dealers, Inc. or NASD Regulation, Inc. in connection with the use of the Base Prospectus for issuances of securities by the Standby Purchaser and the Issuer and the purchase and distribution of the Notes by the Underwriters and the confirmation by the National Association of Securities Dealers, Inc. that it has no objection with respect to the fairness and reasonableness of the underwriting terms and arrangements, each of which has, to the best of the Companies’ knowledge been obtained and is in full force and effect.

(s)Neither the Issuer nor the Standby Purchaser is currently in violation of its charter, by-laws or comparable organizational documents; neither the issuance and sale of the Notes, the execution and delivery of any of the Transaction Documents or the consummation of any of the transactions described or contemplated therein, or the fulfillment of the terms thereof will conflict with, or give rise to any right to accelerate the maturity or require the prepayment, repurchase or redemption of any indebtedness under, or result in a breach or violation or imposition of any lien, charge or encumbrance upon any property or assets of the Companies or any of their Material Subsidiaries pursuant to, (i) the charter, by-laws or comparable organizational documents of either of the Issuer or the Standby Purchaser or any of their Subsidiaries, (ii) the terms of any indenture, contract, lease, mortgage, deed of trust, note agreement, loan agreement or other agreement, obligation, condition, covenant or instrument to which the Issuer or the Standby Purchaser or any of their Subsidiaries is a party or is bound or to which any of their property or assets is subject or (iii) any statute, law, rule, regulation, judgment, order or decree applicable to the Issuer or the Standby Purchaser or any of their Subsidiaries, except in the case of clauses (ii) or (iii) such as could not reasonably be expected to have a Material Adverse Effect.

(t)The consolidated historical financial statements of the Issuer and the Standby Purchaser and their consolidated Subsidiaries included in the Final Offering Document, together with the related notes, have been prepared in accordance with U.S. GAAP applied on a consistent basis throughout the periods involved (except as otherwise noted therein) and present fairly in all material respects the financial condition, results of operations and cash flows of the Issuer and the Standby Purchaser as of the dates and for the periods indicated. Except as disclosed in the Pre-Pricing Prospectus and the Final Offering Document, there has been no material adverse change in the condition (financial or otherwise), prospects, earnings, business or properties of either of the Issuer or the Standby Purchaser and their consolidated Subsidiaries, taken as a whole, since December 31, 2006. The segment data and other financial and statistical information incorporated by reference in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document present fairly the information included therein and have been prepared on a basis consistent with that of the financial statements that are incorporated by

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reference in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document and the books and records of the respective entities presented therein.

(u)There are no pro forma or consolidated financial statements or other financial statements or data which are required to be included or incorporated by reference in the Registration Statement, the Pre-Pricing Prospectus and the Final Offering Document in accordance with Regulation S-X under the Securities Act which have not been included as so required.

(v)The statistical, industry-related and market-related data included in the Pre-Pricing Prospectus and the Final Offering Document are based on or derived from sources which the Standby Purchaser and the Issuer reasonably and in good faith believe are reliable and accurate, and such data agree with the sources from which they are derived.

(w)Except as set forth or contemplated in the Pre-Pricing Prospectus and the Final Offering Document, neither of the Issuer or the Standby Purchaser has entered into any transaction or agreement (whether or not in the ordinary course of business) material to either of the Issuer or the Standby Purchaser individually or the Issuer and the Standby Purchaser taken as a whole with their consolidated Subsidiaries.

(x)No action, suit or proceeding by or before any Governmental Authority involving the Issuer or the Standby Purchaser or any of their Subsidiaries or their property or assets is pending or, to the best knowledge of the Standby Purchaser, threatened, involving or in any way relating to (i) this Agreement, any of the other Transaction Documents or the transactions contemplated herein or therein or (ii) any other matter that individually or in the aggregate could reasonably be expected to have a Material Adverse Effect, except as set forth in or contemplated in the Pre-Pricing Prospectus and the Final Offering Document. Neither the Issuer, the Standby Purchaser or any of their Subsidiaries is in violation of or in default with respect to any applicable statute (including, without limitation, any applicable provision of the Sarbanes-Oxley Act, including any rules and regulations thereunder or related thereto), rule, writ, injunction, decree, order or regulation of any Governmental Authority having jurisdiction over such Person which is reasonably likely to have a Material Adverse Effect.

(y)Each of KPMG Auditores Independentes and Ernst & Young Auditores Independentes (who have certified the financial statements of the Issuer and the Standby Purchaser and supporting schedules and information of Standby Purchaser and the Issuer and their consolidated Subsidiaries and delivered their report with respect to the audited and unaudited consolidated financial statements and other financial information included in the Final Offering Document relating to the Issuer and the Standby Purchaser and their consolidated Subsidiaries) are, and in the case of Ernst & Young Auditores Independentes, were, at the time it served as auditors of the Issuer and Standby Purchaser, independent public accountants within the meaning of the Code of Professional Conduct of the American Institute of Certified Public Accountants and the applicable requirements of the Regulation S-X under the Securities Act and the Exchange Act and, in the case of KPMG Auditores Independentes, and Ernst & Young Auditores Independentes are certified public accountants with respect to the Standby Purchaser and the Issuer under the standards established by the local authorities in the Cayman Islands and Brazil.

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(z)Each of the Issuer and the Standby Purchaser and their respective Subsidiaries has filed or caused to be filed all tax returns which to the knowledge of the Issuer and the Standby Purchaser are required to be filed, and has paid all taxes shown to be due and payable on said returns or on any assessments made against such person or any of its respective properties and all other taxes, assessments, fees or other charges imposed on such person or any of its respective properties by, and Governmental Authority (other than those the amount or validity of which is currently being contested in good faith by appropriate proceedings and with respect to which reserves in conformity with generally accepted accounting principles have been provided on the books of such person); and no material tax liens or material liens with respect to any assessments, fees or other charges have been filed and, to the knowledge of such person, no material claims are being asserted with respect to any such taxes, assessments, fees or other charges.

(aa)The indemnification and contribution provisions set forth in Section 14 hereof do not contravene Brazilian or Cayman Islands or public policy.

(bb)The submission of the Issuer and the Standby Purchaser to the non-exclusive jurisdiction of the courts of the Supreme Court of the State of New York, County of New York, and the United States District Court for the Southern District of New York (each, a “New York court”) in Section 18 hereof, in the case of the Standby Purchaser, and, as applicable, under each of the Transaction Documents is legal, valid and binding under the laws of Brazil and the Cayman Islands; the appointment of the Standby Purchaser’s New York Branch located at 570 Lexington Avenue, 43rd Floor, New York, New York 10022 as its authorized agent for the purpose described in Section 18 below and under each of the other Transaction Documents is legal, valid and binding under the laws of Brazil and the Cayman Islands; and the choice of law provision set forth in Section 18 below and in each Transaction Document is legal, valid and binding under the laws of Brazil and the Cayman Islands. Any final judgment of a New York court in respect of any amount payable by the Issuer and the Standby Purchaser under any Transaction Document and which conforms with Brazilian or Cayman Island, as applicable, law, rule, regulation or public policy and with the provisions for enforcement of foreign judgments set forth in the Final Memorandum be enforceable in the courts of Brazil and the Cayman Islands without reexamination of the merits.

(cc)Both presently and immediately after giving effect to the transactions contemplated hereunder and in the Final Offering Document, each of the Issuer and the Standby Purchaser (i) is and will be able to pay its debts as they become due and (ii) is not insolvent as defined under applicable Brazilian bankruptcy, insolvency or similar law or Cayman Islands bankruptcy, insolvency or similar law.

(dd)The Standby Purchaser has, independently and without reliance upon any Noteholder and based on such documents and information as it has deemed appropriate, made its own credit analysis and decision to enter into this Agreement and each other Transaction Document to which it is or is to be a party, and the Standby Purchaser has established adequate means of obtaining from the Issuer on a continuing basis information pertaining to, and is now and on a continuing basis will be completely familiar with, the business, condition (financial or otherwise), operations, performance, properties and prospects of the Issuer.

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SECTION 10.    Covenants

For so long as the Notes remain outstanding or any amount remains unpaid on the Notes and the Indenture, the Standby Purchaser will, and will cause each of its Subsidiaries to, comply with the terms and covenants set forth below (except as otherwise provided in a duly authorized amendment to this Agreement as provided herein):

(a)Performance of Obligations. The Standby Purchaser shall pay all amounts owed by it and comply with all its other obligations under the terms of this Agreement and the Indenture in accordance with the terms thereof.

(b)Maintenance of Corporate Existence. The Standby Purchaser will, and will cause each of its Subsidiaries to, (i) maintain in effect its corporate existence and all registrations necessary therefor except as otherwise permitted by Section 10(m) and (ii) take all actions to maintain all rights, privileges, titles to property, franchises, concessions and the like necessary or desirable in the normal conduct of its business, activities or operations; provided, however, that this Section 10(b) shall not require the Standby Purchaser to maintain or cause any Subsidiary thereof to maintain any such right, privilege, title to property or franchise or require the Standby Purchaser to preserve the corporate existence of any Subsidiary, if, in each case, the failure to do so does not, and will not, have a Material Adverse Effect.

(c)Maintenance of Office or Agency. So long as any of the Notes are outstanding, the Standby Purchaser will maintain in the Borough of Manhattan, The City of New York, an office or agency where notices to and demands upon the Standby Purchaser in respect of this Agreement may be served, and the Standby Purchaser will not change the designation of such office without prior written notice to the Trustee and designation of a replacement office in the same general location.

(d)Ranking. The Standby Purchaser will ensure at all times that its obligations under this Agreement will constitute the general senior unsecured and unsubordinated obligations of the Standby Purchaser and will rank pari passu, without any preferences among themselves, with all other present and future senior unsecured and unsubordinated obligations of the Standby Purchaser (other than obligations preferred by statute or by operation of law) that are not, by their terms, expressly subordinated in right of payment to the obligations of the Standby Purchaser under this Agreement.

(e)Notice of Defaults. The Standby Purchaser will give written notice to the Trustee, as soon as is practicable and in any event within ten calendar days after the Standby Purchaser becomes aware, or should reasonably become aware, of the occurrence of any Default or any Event of Default, accompanied by a certificate of an officer of the Standby Purchaser setting forth the details thereof and stating what action the Standby Purchaser proposes to take with respect thereto.

(f)Limitation on Consolidation, Merger, Sale or Conveyance. (i) The Standby Purchaser will not, in one or a series of transactions, consolidate or amalgamate with or merge into any corporation or convey, lease or transfer substantially all of its properties, assets or revenues to any person or entity (other than a direct or indirect Subsidiary of the Standby

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Purchaser) or permit any person or entity (other than a direct or indirect Subsidiary of the Standby Purchaser) to merge with or into it, unless:

(A)either the Standby Purchaser is the continuing entity or the person (the “Successor Company”) formed by such consolidation or into which the Standby Purchaser is merged or that acquired or leased such property or assets of the Standby Purchaser will assume (jointly and severally with the Standby Purchaser unless the Standby Purchaser shall have ceased to exist as a result of such merger, consolidation or amalgamation), by an amendment to this Agreement (the form and substance of which shall be previously approved by the Trustee), all of the Standby Purchaser’s obligations under this Agreement;

(B)the Successor Company (jointly and severally with the Standby Purchaser unless the Standby Purchaser shall have ceased to exist as part of such merger, consolidation or amalgamation) agrees to indemnify each Noteholder against any tax, assessment or governmental charge thereafter imposed on such Noteholder solely as a consequence of such consolidation, merger, conveyance, transfer or lease with respect to the payment of principal of, or interest on, the Notes;

(C)immediately after giving effect to such transaction, no Event of Default and no Default has occurred and is continuing;

(D)the Standby Purchaser has delivered to the Trustee an Officer’s Certificate and an Opinion of Counsel each stating that such merger consolidation, sale, transfer or other conveyance or disposition and the amendment to this Agreement comply with the terms of this Agreement and that all conditions precedent provided for herein and relating to such transaction have been complied with; and

(E)the Standby Purchaser has delivered notice of any such transaction to Moody’s (which notice shall contain a description of such merger, consolidation or conveyance).

(ii)Notwithstanding anything to the contrary in the foregoing, so long as no Default or Event of Default shall have occurred and be continuing at the time of such proposed transaction or would result therefrom and the Standby Purchaser has delivered notice of any such transaction to Moody’s and the Trustee (which notice shall contain a description of such merger, consolidation or conveyance):

(A)the Standby Purchaser may merge, amalgamate or consolidate with or into, or convey, transfer, lease or otherwise dispose of all or substantially all of its properties, assets or revenues to a direct or indirect Subsidiary of the Standby Purchaser in cases when the Standby Purchaser is the surviving entity in such transaction and such transaction would not have a Material Adverse Effect on the Standby Purchaser and its Subsidiaries taken as a whole, it being understood that if the Standby Purchaser is not the surviving entity, the Standby Purchaser shall be required to comply with the requirements set forth in the previous paragraph; or

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(B)any direct or indirect Subsidiary of the Standby Purchaser may merge or consolidate with or into, or convey, transfer, lease or otherwise dispose of assets to, any person (other than the Standby Purchaser or any of its Subsidiaries or Affiliates) in cases when such transaction would not have a Material Adverse Effect on the Standby Purchaser and its Subsidiaries taken as a whole; or

(C)any direct or indirect Subsidiary of the Standby Purchaser may merge or consolidate with or into, or convey, transfer, lease or otherwise dispose of assets to, any direct or indirect Subsidiary of the Standby Purchaser; or

(D)any direct or indirect Subsidiary of the Standby Purchaser may liquidate or dissolve if the Standby Purchaser determines in good faith that such liquidation or dissolution is in the best interests of the Standby Purchaser, and would not result in a Material Adverse Effect on the Standby Purchaser and its Subsidiaries taken as a whole and if such liquidation or dissolution is part of a corporate reorganization of the Standby Purchaser.

(g)Negative Pledge. So long as any Note remains outstanding, the Standby Purchaser will not create or permit any Lien, other than a Permitted Lien, on any of the Standby Purchaser’s assets to secure (i) any of the Standby Purchaser’s Indebtedness or (ii) the Indebtedness of any other person, unless the Standby Purchaser contemporaneously creates or permits such Lien to secure equally and ratably the Standby Purchaser’s obligations under this Agreement or the Standby Purchaser provides such other security for the Notes as is duly approved by the Trustee, at the direction of the Noteholders, in accordance with the Indenture. In addition, the Standby Purchaser will not allow any of the Standby Purchaser’s Subsidiaries to create or permit any Lien, other than a Permitted Lien, on any of the Standby Purchaser’s assets to secure (i) any of the Standby Purchaser’s Indebtedness, (ii) any of the Indebtedness of the Standby Purchaser’s Subsidiaries or (iii) the Indebtedness of any other person, unless it contemporaneously creates or permits the Lien to secure equally and ratably the Standby Purchaser’s obligations under this Agreement or the Standby Purchaser or such Subsidiary provides such other security for the Notes as is duly approved by the Trustee, at the direction of the Noteholders, in accordance with the Indenture.

(h)Provision of Financial Statements and Reports. (i) The Standby Purchaser will provide to the Trustee, in English or accompanied by a certified English translation thereof, (A) within 90 calendar days after the end of each fiscal quarter (other than the fourth quarter), its unaudited and consolidated balance sheet and statement of income calculated in accordance with U.S. GAAP, (B) within 120 calendar days after the end of each fiscal year, its audited and consolidated balance sheet and statement of income calculated in accordance with U.S. GAAP and (C) such other financial data as the Trustee may reasonably request.

(ii)The Standby Purchaser will provide, together with each of the financial statements delivered pursuant to Sections 10(p)(i)(A) and (B), an Officers’ Certificate stating that a review of the activities of the Standby Purchaser and the Issuer has been made during the period covered by such financial statements with a view to determining whether the Standby Purchaser and the Issuer have kept, observed, performed and fulfilled their covenants and agreements under this Agreement and the Indenture, as

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applicable, and that no Default or Event of Default has occurred during such period or, if one or more have actually occurred, specifying all such events and what actions have been taken and will be taken with respect to such Default or Event of Default.

(iii)The Standby Purchaser shall, whether or not it is required to file reports with the SEC, file with the SEC and deliver to the Trustee (for redelivery to all Noteholders) all reports and other information as it would be required to file with the SEC under the Exchange Act if it were subject to those regulations; provided, however, that if the SEC does not permit the filing described in the first sentence of this Section 10(q)(iii), the Standby Purchaser will provide annual and interim reports and other information to the Trustee within the same time periods that would be applicable if the Standby Purchaser were required and permitted to file these reports with the SEC.

(iv)Upon written request of any Holder or The Depository Trust Company (DTC), the reports and other information provided for in this paragraph (h) shall be delivered by DTC representing the Noteholders, at 55 Water Street, 25th Floor, New York, NY, 10041, Attention: Proxy Department, or such other address as DTC may provide to the Trustee in writing.

(v)Delivery of the above reports to the Trustee is for informational purposes only and the Trustee's receipt of such reports shall not constitute constructive notice of any information contained therein or determinable from information contained therein, including the Standby Purchaser's compliance with any of its covenants in the Indenture (as to which the Trustee is entitled to rely exclusively on an Officer's Certificate).

SECTION 11.Amendments, Etc. No amendment or waiver of any provision of this Agreement and no consent to any departure by the Standby Purchaser therefrom shall in any event be effective unless the same shall be in writing and signed by the Trustee and the Standby Purchaser, and then such waiver or consent shall be effective only in the specific instance and for the specific purpose for which given.

SECTION 12.Notices, Etc. (a)  All notices and other communications provided for hereunder shall be in writing (including telegraphic or telecopy) and mailed, telecopied or delivered by hand, if to the Standby Purchaser, addressed to it at Avenida República do Chile, 65, 20035-900 Rio de Janeiro - RJ, Brazil, Telephone: (55-21) 534-4477, Telecopier: (55-21) 534-4278, Attention: Wilson de Oliveira Senna, Financings, Leasing and Corporate Loans Manager, if to the Trustee, at The Bank of New York, 101 Barclay Street, 4E, New York, New York, 10286, USA, Telephone: (1-212) 815-5616, Telecopier: (1-212) 815-5603, Attention: Corporate Trust Department or, as to any party, at such other address as shall be designated by such party in a written notice to each other party. All such notices and other communications shall, when telecopied, be effective when transmitted. Delivery by telecopier of an executed counterpart of a signature page to any amendment or waiver of any provision of this Agreement shall be

effective as delivery of an original executed counterpart thereof.

(b)All payments made by the Standby Purchaser to the Trustee hereunder shall be made to the Payment Account (as defined in the Indenture), except to the extent otherwise specified in a Partial Non-Payment Notice or Total Non-Payment Notice.

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SECTION 13.No Waiver; Remedies. No failure on the part of the Trustee to exercise, and no delay in exercising, any right hereunder shall operate as a waiver thereof; nor shall any single or partial exercise of any right hereunder preclude any other or further exercise thereof or the exercise of any other right. The remedies herein provided are cumulative and not exclusive of any remedies provided by law.

SECTION 14.Indemnification. (a) Without limitation on any other obligations of the Standby Purchaser or remedies of the Trustee under this Agreement, the Standby Purchaser shall, to the fullest extent permitted by law, indemnify, defend and save and hold harmless the Trustee and its officers, directors, employees, agents and advisors (each, an “Indemnified Party”) from and against, and shall pay on demand, any and all claims, damages, losses, liabilities and expenses (including, without limitation, reasonable fees and expenses of counsel) that may be incurred by or asserted or awarded against any Indemnified Party in connection with arising out of or as a result of this Agreement or of any failure of any Purchase Obligation to be the legal, valid and binding obligations of the Standby Purchaser enforceable against it in accordance with their terms.

(b)The Standby Purchaser hereby also agrees that none of the Indemnified Parties shall have any liability (whether direct or indirect, in contract, tort or otherwise) to the Standby Purchaser or any of its Affiliates or any of their respective officers, directors, employees, agents and advisors, and the Standby Purchaser hereby agrees not to assert any claim against any Indemnified Party on any theory of liability, for special, indirect, consequential or punitive damages arising out of or otherwise relating to the Transaction Documents or any of the transactions contemplated by the Transaction Documents.

(c)Without prejudice to the survival of any of the other agreements of the Standby Purchaser under this Agreement or any of the other Transaction Documents, the agreements and obligations of the Standby Purchaser contained in Sections 2 and 3 (with respect to the payment of all other amounts owed under the Indenture), Section 9, Section 17 and this Section 14 shall survive the payment in full of the Purchase Obligations and all of the other amounts payable under this Agreement, the termination of this Agreement and/or the resignation or removal of the Trustee.

(d)The above indemnities shall constitute separate and independent obligations of the Standby Purchaser from its obligations hereunder, will give rise to separate and independent causes of action, will apply irrespective of any indulgence granted from time to time and will continue in full force and effect notwithstanding any judgment or the filing of any proof or proofs in any bankruptcy, insolvency or liquidation of the Standby Purchaser for a liquidated sum or sums in respect of amounts due under this Agreement, or under the Indenture or the Notes or under any judgment or order.

SECTION 15.Subordination. To the extent that the Standby Purchaser is required to make any payment hereunder, the Standby Purchaser hereby subordinates any and all debts, liabilities and other obligations owed by the Issuer to the Standby Purchaser (the “Subordinated Obligations”) to the Purchase Obligations and agrees that it shall not require the Issuer to make any payments in respect thereof to the extent and in the manner hereinafter set forth in this Section 15:

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(a)Prohibited Payments, Etc. Except during the continuance of a Default or Event of Default (including the commencement and continuation of any proceeding under any applicable bankruptcy, insolvency, receivership or similar law now or hereafter in effect relating to the Issuer (each such law, a “Bankruptcy Law”)), the Standby Purchaser may receive any payments from the Issuer on account of the Subordinated Obligations. After the occurrence and during the continuance of any Default or Event of Default (including the commencement and continuation of any proceeding under any Bankruptcy Law relating to the Issuer), however, unless the Trustee otherwise agrees in writing, the Standby Purchaser shall not demand, accept or take any action to collect any payment on account of the Subordinated Obligations.

(b)Prior Payment of Purchase Obligations. In any proceeding under any Bankruptcy Law relating to the Issuer, the Standby Purchaser agrees that the Trustee, on behalf of the Noteholders, shall be entitled to receive payment in full in cash of all Purchase Obligations (including all interest and expenses accruing after the commencement of a proceeding under any Bankruptcy Law, whether or not constituting an allowed claim in such proceeding (“Post Petition Interest”)) before the Standby Purchaser receives payment of any Subordinated Obligations.

(c)Turn-Over. After the occurrence and during the continuance of any Default (including the commencement and continuation of any proceeding under any Bankruptcy Law relating to the Issuer), the Standby Purchaser shall, if the Trustee, on behalf of the Noteholders, so requests, collect, enforce and receive payments on account of the Subordinated Obligations as trustee for the Trustee and deliver such payments to the Trustee, on behalf of the Noteholders, on account of the Purchase Obligations (including all Post Petition Interest), together with any necessary endorsements or other instruments of transfer, but without reducing or affecting in any manner the liability of the Standby Purchaser under the other provisions of this Agreement.

(d)Trustee Authorization. After the occurrence and during the continuance of any Default (including the commencement and continuation of any proceeding under any Bankruptcy Law relating to any of the Issuer, any Material Subsidiary thereof or any Material Subsidiary of the Standby Purchaser), the Trustee, at the direction of the Noteholders or otherwise, is authorized and empowered (but without any obligation to so do), in its discretion, (i) in the name of the Standby Purchaser, to collect and enforce, and to submit claims in respect of, Subordinated Obligations and to apply any amounts received thereon to the Purchase Obligations (including any and all Post Petition Interest), and (ii) to require the Standby Purchaser (A) to collect and enforce, and to submit claims in respect of, Subordinated Obligations and (B) to pay any amounts received on such obligations to the Trustee for application to the Purchase Obligations (including any and all Post Petition Interest).

SECTION 16.Continuing Agreement; Assignment of Rights Under the Indenture and the Notes. This Agreement is a continuing Purchase Obligation and shall (a) remain in full force and effect until the later of (i) the repayment in full by the Issuer of all amounts due and owing under the Indenture with respect to the Notes and (ii) the repayment in full of all Purchase Obligations and all other amounts payable under this Agreement, (b) be binding upon the Standby Purchaser, its successors and assigns and (c) inure to the benefit of and be enforceable by the Trustee, on behalf of Noteholders, and their successors, transferees and assigns. Without limiting the generality of clause (c) of the immediately preceding sentence, any Noteholder may

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assign or otherwise transfer all or any portion of its rights and obligations under the Indenture (including, without limitation, the Note or Notes held by it) to any other person or entity (subject to the rights of the Standby Purchaser hereunder in respect of any Partial Non-Payment Amount With Interest or Total Non-Payment Amount With Interest as provided herein), and such other person or entity shall thereupon become vested with all the benefits in respect thereof granted to such Noteholder herein or otherwise, in each case as and to the extent provided in the Indenture. The Standby Purchaser shall not have the right to assign its rights hereunder or any interest herein without the prior written consent of all of the Noteholders.

SECTION 17.Currency Rate Indemnity.(a) The Standby Purchaser shall (to the extent lawful) indemnify the Trustee and the Noteholders and keep them indemnified against:

(i)in the case of nonpayment by the Standby Purchaser of any amount due to the Trustee, on behalf of the Noteholders, under this Agreement any loss or damage incurred by any of them arising by reason of any variation between the rates of exchange used for the purposes of calculating the amount due under a judgment or order in respect thereof and those prevailing at the date of actual payment by the Standby Purchaser; and

(ii)any deficiency arising or resulting from any variation in rates of exchange between (a) the date as of which the local currency equivalent of the amounts due or contingently due under this Agreement or in respect of the Notes is calculated for the purposes of any bankruptcy, insolvency or liquidation of the Standby Purchaser, and (b) the final date for ascertaining the amount of claims in such bankruptcy, insolvency or liquidation. The amount of such deficiency shall be deemed not to be increased or reduced by any variation in rates of exchange occurring between the said final date and the date of any bankruptcy, insolvency or liquidation or any distribution of assets in connection therewith.

(b)The Standby Purchaser agrees that, if a judgment or order given or made by any court for the payment of any amount in respect of its Purchase Obligation hereunder is expressed in a currency (the “Judgment Currency”) other than U.S. dollars (the “Denomination Currency”), it will indemnify the relevant Holder and the Trustee against any deficiency arising or resulting from any variation in rates of exchange between the date at which the amount in the Denomination Currency is notionally converted into the amount in the Judgment Currency for the purposes of such judgment or order and the date of actual payment thereof.

(c)The above indemnities shall constitute separate and independent obligations of the Standby Purchaser from its obligations hereunder, will give rise to separate and independent causes of action, will apply irrespective of any indulgence granted from time to time and will continue in full force and effect notwithstanding any judgment or the filing of any proof or proofs in any bankruptcy, insolvency or liquidation of the Standby Purchaser for a liquidated sum or sums in respect of amounts due under this Agreement, or under the Indenture or the Notes or under any judgment or order.

SECTION 18.Governing Law; Jurisdiction; Waiver of Immunity, Etc. (a) This Agreement shall be governed by, and construed in accordance with, the laws of the State of New York.

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(b)The Standby Purchaser hereby irrevocably and unconditionally submits, for itself and its property, to the nonexclusive jurisdiction of any New York State court or federal court of the United States of America sitting in New York City, and any appellate court from any thereof, in any action or proceeding arising out of or relating to this Agreement or any of the other Transaction Documents to which it is or is to be a party, or for recognition or enforcement of any judgment, and the Standby Purchaser hereby irrevocably and unconditionally agrees that all claims in respect of any such action or proceeding may be heard and determined in any such New York State court or, to the extent permitted by law, in such federal court. The Standby Purchaser agrees that a final judgment in any such action or proceeding shall be conclusive and may be enforced in other jurisdictions by suit on the judgment or in any other manner provided by law. Nothing in this Agreement or any other Transaction Document shall affect any right that any party may otherwise have to bring any action or proceeding against the Issuer or the Standby Purchaser, as the case may be, relating to this Agreement or any other Transaction Document in the courts of any jurisdiction.

(c)The Standby Purchaser hereby irrevocably appoints and empowers the New York office of Petróleo Brasileiro S.A., located at 570 Lexington Avenue, 43rd Floor, New York, New York 10022 as its authorized agent (the “Process Agent”) to accept and acknowledge for and on its behalf and on behalf of its property service of any and all legal process, summons, notices and documents which may be served in any such suit, action or proceedings in any New York State court or United States federal court sitting in the State of New York in the Borough of Manhattan and any appellate court from any thereof, which service may be made on such designee, appointee and agent in accordance with legal procedures prescribed for such courts. The Standby Purchaser will take any and all action necessary to continue such designation in full force and effect and to advise the Trustee of any change of address of such Process Agent and should such Process Agent become unavailable for this purpose for any reason, the Standby Purchaser will promptly and irrevocably designate a new Process Agent within New York, New York, which will agree to act as such, with the powers and for the purposes specified in this subsection (c). The Standby Purchaser irrevocably consents and agrees to the service of any and all legal process, summons, notices and documents out of any of the aforesaid courts in any such action, suit or proceeding by hand delivery, to it at its address set forth in Section 12 or to any other address of which it shall have given notice pursuant to Section 12 or to its Process Agent. Service upon the Standby Purchaser or the Process Agent as provided for herein will, to the fullest extent permitted by law, constitute valid and effective personal service upon it and the failure of the Process Agent to give any notice of such service to the Standby Purchaser shall not impair or affect in any way the validity of such service or any judgment rendered in any action or proceeding based thereon.

(d)The Standby Purchaser irrevocably and unconditionally waives, to the fullest extent it may legally and effectively do so, any objection that it may now or hereafter have to the laying of venue of any suit, action or proceeding arising out of or relating to this Agreement or any of the other Transaction Documents to which it is or is to be a party in any New York State or federal court. The Standby Purchaser hereby irrevocably waives, to the fullest extent permitted by law, the defense of an inconvenient forum to the maintenance of such suit, action or proceeding in any such court.

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(e)THE STANDBY PURCHASER HEREBY IRREVOCABLY WAIVES ALL RIGHT TO TRIAL BY JURY IN ANY ACTION, PROCEEDING OR COUNTERCLAIM (WHETHER BASED ON CONTRACT, TORT OR OTHERWISE) ARISING OUT OF OR RELATING TO ANY OF THE TRANSACTION DOCUMENTS, THE ADVANCES OR THE ACTIONS OF ANY NOTEHOLDER IN THE NEGOTIATION, ADMINISTRATION, PERFORMANCE OR ENFORCEMENT THEREOF.

(f)This Agreement and any other documents delivered pursuant hereto, and any actions taken hereunder, constitute commercial acts by the Standby Purchaser. The Standby Purchaser irrevocably and unconditionally and to the fullest extent permitted by law, waives, and agrees not to plead or claim, any immunity from jurisdiction of any court or from any legal process (whether through service of notice, attachment prior to judgment, attachment in aid of execution, execution or otherwise) for itself, the Issuer or any of their property, assets or revenues wherever located with respect to its obligations, liabilities or any other matter under or arising out of or in connection with this Agreement, any of the Transaction Documents or any document delivered pursuant hereto, in each case for the benefit of each assigns, it being intended that the foregoing waiver and agreement will be effective, irrevocable and not subject to withdrawal in any and all jurisdictions, and, without limiting the generality of the foregoing, agrees that the waivers set forth in this subsection (f) shall have the fullest scope permitted under the United States Foreign Sovereign Immunities Act of 1976 and are intended to be irrevocable for the purposes of such act.

SECTION 19.Execution in Counterparts. This Agreement and each amendment, waiver and consent with respect hereto may be executed in any number of counterparts and by different parties thereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute one and the same agreement. Delivery of an executed counterpart of a signature page to this Agreement by telecopier shall be effective as delivery of an original executed counterpart of this Agreement.

SECTION 20.Pledge of Interests. (a) The Standby Purchaser hereby pledges to the Trustee (for the benefit of the Noteholders) and grants a continuing security interest in, all of its interest (if any) in (a) the Payment Account, (b) all funds from time to time on deposit in the Payment Account, (c) all interest, dividends, distributions, cash, instruments and other property from time to time received, receivable or on deposit in the Payment Account, and (d) all proceeds of any of the foregoing (together, the “Collateral”). The Standby Purchaser agrees to take all such action as is required by applicable Law or as the Trustee may require, including delivering Opinions of Counsel in form and substance acceptable to the Trustee, as to the grant and perfection of the foregoing security interests.

(b)The security interest granted in the Collateral, shall secure the payment of all obligations of the Standby Purchaser now or hereafter existing under the Transaction Documents, whether direct or indirect, absolute or contingent, and whether for principal, reimbursement obligations, interest, fees, premiums, penalties, indemnifications, contract causes of action, costs, expenses or otherwise. The Standby Purchaser represents and warrants that it has not heretofore pledged, conveyed, granted a lien on, or security interest in, or otherwise encumbered any of the Collateral in favor of any Person under U.S., Cayman, Brazilian or other Law.

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SECTION 21.Entire Agreement. This Agreement, together with the Indenture and the Notes, sets forth the entire agreement of the parties hereto with respect to the subject matter hereof.

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IN WITNESS WHEREOF, the Standby Purchaser has caused this Agreement to be duly executed and delivered by its officer thereunto duly authorized as of the date first above written.

PETRÓLEO BRASILEIRO S.A.—PETROBRAS

By:   /s/ Theodore Helms                        

Name: Theodore Helms

Title:   Executive Manager

WITNESSES:

1.	/s/ David Flechner
	Name: David Flechner
2.	/s/ Iris Castellano
	Name: Iris Castellano

STATE OF NEW YORK	)
	)	ss:
COUNTY OF NEW YORK	)

On this 1st day of November, 2007, before me personally came Theodore M. Helms to me known, who, being by me duly sworn, did depose and say that he is the Executive Manager of Petróleo Brasileiro S.A. – Petrobras, a corporation described in and which executed the foregoing instrument and acknowledges said instrument to be the free act and deed of said entity.

On this 1st day of November, 2007, before me personally came David Flechner and Iris Castellano to me personally known, who being by me sworn, did depose and say that they signed their names to the foregoing instrument as witnesses.

[Notarial Seal]	/s/ Risa Laurie Chubinsky   Notary Public COMMISSION EXPIRES
	Risa Laurie Chubinsky Notary Public, State of New York No. 01CH6172040 Qualified in Kings County Certificate Filed in New York County Commission Expires Aug. 6, 2011

ACKNOWLEDGED:

THE BANK OF NEW YORK, as Trustee and not

in its individual capacity

By: /s/ John T. Needham, Jr.            

Name: John T. Needham, Jr.

Title:   Vice President

WITNESSES:

1.	/s/ Kevin F. Binnie
	Name: Kevin F. Binnie Title:   Vice President

2.	/s/ Lucia Jaklitsch
	Name: Lucia Jaklitsch Title:   Vice President

STATE OF NEW YORK	)
	)	ss:
COUNTY OF NEW YORK	)

STATE OF NEW YORK)

On this 1st day of November, 2007, before me a notary public with and for said county, personally appeared Kevin F. Binnie to me personally known, who, being duly sworn, did say that John H. Needham, Jr. is a Vice President of THE BANK OF NEW YORK, one of the persons described in and which executed the foregoing instrument, and acknowledge said instrument to be the free act and deed of said corporation.

On this 1st day of November, 2007, before me personally came Kevin F. Binnie and Lucia Jaklitsch to me personally known, who being by me sworn, did depose and say that they signed their names to the foregoing instrument as witnesses.

[Notarial Seal]	/s/ Emily Fayan                                                  Notary Public
	Emily Fayan Notary Public, State of New York No. 01FA4737006 Qualified in Kings County Certificate Filed in New York County Commission Expires Dec. 31, 2009

EXHIBIT A

FORM OF PARTIAL NON-PAYMENT NOTICE

[Date]

VIA FACSIMILE

Petróleo Brasileiro S.A. - Petrobras

Avenida República do Chile, 65

20035-900 Rio de Janeiro

Brazil

Attention : Sérvio Túlio Tinoco

Head of Trade Finance & Foreign Exchange

Petrobras International Finance Company

US$1,000,000,000 5.875% Global Notes due 2018

Dear Ladies and Gentlemen:

Reference is made to that certain indenture dated as of December 15, 2006 (the “Original Indenture”) between Petrobras International Finance Company (“PIFCo”) and The Bank of New York, (the “Trustee”), as supplemented by the first supplemental indenture among the PIFCo, Petróleo Brasileiro, S.A. - Petrobras (“Petrobras”) and the Trustee dated as of November 1, 2007 (the “First Supplemental Indenture”). The Original Indenture, as supplemented by the First Supplemental Indenture, and as amended or supplemented from time to time, with respect to the Notes is hereinafter referred to as the “Indenture.” Reference is also made to that certain Standby Purchase Agreement (as amended or supplemented from time to time, the “Standby Purchase Agreement”) dated as of November 1, 2007 between the Trustee and Petrobras pursuant to which Petrobras has undertaken to purchase from the holders of PIFCo’s 5.875% Global Notes due 2018 (the “Notes”) such holders’ right to receive unpaid amounts due and owing on such Notes. Capitalized terms not defined herein shall have the meanings set forth in the Standby Purchase Agreement.

By this notice, the undersigned, acting on behalf of the holders of the Notes, hereby advises you as follows:

1. On [date], PIFCo was obligated to make a payment of [principal] [interest] [Additional Amounts] [other amounts under the Indenture] in an amount equal to US$                 in respect of [principal] [interest] [Additional Amounts] [other amounts due under the Indenture] (the “Overdue Amount”). This notice constitutes a Partial Non-Payment Notice as contemplated in the Standby Purchase Agreement.

A-1

1. On [date], PIFCo was obligated to make a payment of [principal] [interest] [Additional Amounts] [other amounts under the Indenture] in an amount equal to US$                 in respect of [principal] [interest] [Additional Amounts] [other amounts due under the Indenture] (the “Overdue Amount”). This notice constitutes a Partial Non-Payment Notice as contemplated in the Standby Purchase Agreement.

2. Pursuant to the Standby Purchase Agreement, you are obligated to purchase from the holders of the Notes their right to receive the Overdue Amount.

3. Pursuant to the Standby Purchase Agreement, you are hereby directed to purchase the right of the holders of the Notes to receive the Overdue Amount and to make a payment to the Trustee, on behalf of the holders of the Notes, in partial satisfaction of your obligation to purchase the right to Overdue Amount.

4. You are hereby directed to pay immediately the Overdue Amount to the Payment Account referenced in the Standby Purchase Agreement (Account No. ) together with interest on such Overdue Amount, at the rates specified in the Standby Purchase Agreement, from the date PIFCo was itself obligated to pay the Overdue Amount (the “Liability Date”), through and including the date that payment by you is actually made.

5. Petrobras is requested to acknowledge receipt of this notice by countersigning in the space provided below and returning a copy of the same to the Issuer at the address provided in the Standby Purchase Agreement with a copy by facsimile to the Trustee at fax: (1-212) 815-5603, Attention: Corporate Trust Department

THE BANK OF NEW YORK, as
Trustee
By:
	Name:
	Title:

ACKNOWLEDGED & AGREED

PETRÓLEO BRASILEIRO S.A.--PETROBRAS

By:
	Name:
	Title:
	Date:

A-2

EXHIBIT B

FORM OF TOTAL NON-PAYMENT NOTICE

[Date]

VIA FACSIMILE

Petróleo Brasileiro S.A. - Petrobras

Avenida República do Chile, 65

20035-900 Rio de Janeiro

Brazil

Attention : Sérvio Túlio Tinoco

Head of Trade Finance & Foreign Exchange

Petrobras International Finance Company

US$1,000,000,000 5.875% Global Notes due 2018

Dear Sirs:

Reference is made to that certain indenture dated as of December 15, 2006 (the “Original Indenture”) between Petrobras International Finance Company (“PIFCo”) and The Bank of New York, (the “Trustee”), as supplemented by the first supplemental indenture among the PIFCo, Petróleo Brasileiro, S.A. - Petrobras (“Petrobras”) and the Trustee dated as of November 1, 2007 (the “First Supplemental Indenture”). The Original Indenture, as supplemented by the First Supplemental Indenture, and as amended or supplemented from time to time with respect to the Notes, is hereinafter referred to as the “Indenture.” Reference is also made to that certain Standby Purchase Agreement (as amended or supplemented from time to time, the “Standby Purchase Agreement”) dated as of November 1, 2007 between the Trustee and Petróleo Brasileiro, S.A. - Petrobras (“Petrobras”) pursuant to which Petrobras has undertaken to purchase from the holders of PIFCo’s 5.875% Global Notes due 2018 (the “Notes”) such holders’ right to receive unpaid amounts due and owing on such Notes. Capitalized terms not defined herein shall have the meanings set forth in the Standby Purchase Agreement.

By this notice, the undersigned, acting on behalf of the holders of the Notes, hereby advises you as follows:

1. On [date], PIFCo was obligated to make a payment of [principal] [interest] [Additional Amounts] [other amounts under the Indenture] in an amount equal to US$                 in respect of [principal] [interest] [Additional Amounts] [other amounts due under the Indenture] (the “Overdue

B-1

Amount”). This notice constitutes a Total Non-Payment Notice as contemplated in the Standby Purchase Agreement.

2. Pursuant to the Standby Purchase Agreement, you are obligated to purchase from the holders of the Notes their right to receive the Overdue Amount.

3. Pursuant to the Standby Purchase Agreement, you are hereby directed to purchase the right of the holders of the Notes to receive the Overdue Amount and to make a payment to the Trustee, on behalf of the holders of the Notes, in partial satisfaction of your obligation to purchase the right to Overdue Amount.

4. You are hereby directed to pay immediately the Overdue Amount to the Payment Account referenced in the Standby Purchase Agreement (Account No.            ) together with interest on such Overdue Amount, at the rates specified in the Standby Purchase Agreement, from the date PIFCo was itself obligated to pay the Overdue Amount through and including the date that payment by you is actually made.

5. Petrobras is requested to acknowledge receipt of this notice by countersigning in the space provided below and returning a copy of the same to the Issuer at the address provided in the Standby Purchase Agreement with a copy by facsimile to the Trustee at fax: (1-212) 815-5603, Attention: Corporate Trust Department

THE BANK OF NEW YORK, as
Trustee
By:
	Name:
	Title:

ACKNOWLEDGED & AGREED

PETRÓLEO BRASILEIRO S.A.--PETROBRAS

By:
	Name:
	Title:
	Date:

EX-4.2

Exhibit 4.2

FIRST SUPPLEMENTAL INDENTURE

FIRST SUPPLEMENTAL INDENTURE (the “First Supplemental Indenture”), effective as of November 1, 2007, by and among PETROBRAS INTERNATIONAL FINANCE COMPANY, an exempted company incorporated with limited liability under the laws of the Cayman Islands, having its principal office at 4^th Floor, Harbour Place, 103 South Church Street, George Town, Grand Cayman, Cayman Islands (the “Company”), THE BANK OF NEW YORK, a New York banking corporation, as Trustee hereunder (the “Trustee”), and PETRÓLEO BRASILEIRO S.A. – PETROBRAS, a mixed capital company (sociedade de economia mista) organized under the laws of Brazil, having its principal office at Avenida República do Chile, 65, 20035-900 Rio de Janeiro – RJ, Brazil (“Petrobras”).

WITNESSETH:

WHEREAS, the Company and the Trustee previously have entered into an indenture, dated as of December 15, 2006 (the “Original Indenture”, and as supplemented by this First Supplemental Indenture and any further supplements thereto, the “Indenture”), providing for the issuance from time to time of secured or unsecured debentures, notes or other evidences of indebtedness of the Company to be issued in one or more series as provided in the Indenture;

WHEREAS, Section 9.01 of the Indenture provides that, subsequent to the execution of the Original Indenture and subject to satisfaction of certain conditions, the Company and the Trustee may enter into one or more indentures supplemental to the Original Indenture to add to, change or eliminate any of the provisions of the Indenture in respect of one or more series of Securities (as defined in the Indenture);

WHEREAS, on the date hereof the Company intends to issue pursuant to its Registration Statement on Form F-3 (File No. 333-139459-01) (the “Registration Statement”), dated December 18, 2006, the Prospectus Supplement dated October 29, 2007 and related Base Prospectus dated December 18, 2006 (collectively, the “Offering Document”) and the Indenture, US$1,000,000,000 of its 5.875% Global Notes due 2018, in the form attached as Exhibit A hereto (the “Notes”), having the terms and conditions contemplated in the Offering Document as provided for in the Original Indenture, as supplemented by this First Supplemental Indenture;

WHEREAS, as contemplated in the Offering Document, Petrobras and the Trustee intend, in connection with the issuance of the Notes, to (i) enter into a Standby Purchase Agreement, dated as of the date hereof in the form attached as Exhibit B hereto (the “Standby Purchase Agreement”), to provide the holders of the Notes (the “Holders”) with assurances that, if the Company shall fail to make all required payments of principal, interest or other amounts due in respect of the Notes and the Indenture, Petrobras will purchase the rights of the Holders to receive such amounts in consideration of the payment by Petrobras of an amount of funds equal to the amounts then owed under the Indenture and the Notes, subject to the provisions thereof and (ii) grant Holders of the Notes direct rights against Petrobras in respect of the Standby Purchase Agreement by Petrobras being a party to the Indenture as provided herein;

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WHEREAS, the Trustee has provided to the Company and Petrobras Statements of Eligibility under the Trust Indenture Act of 1939, as amended, with respect to each of the Companies which have been filed as exhibits to the Registration Statement;

WHEREAS, any and all conditions and requirements necessary to make this First Supplemental Indenture a valid, binding, and legal instrument in accordance with the terms of the Indenture have been performed and fulfilled and the execution and delivery of this First Supplemental Indenture have been in all respects duly authorized;

WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee is authorized to execute and deliver this First Supplemental Indenture; and

WHEREAS, the Company and Petrobras have requested that the Trustee execute and deliver this First Supplemental Indenture;

NOW, THEREFORE, for and in consideration of the premises and the mutual covenants contained herein and in the Indenture and for other good and valuable consideration, the receipt and sufficiency of which are herein acknowledged, the Company, Petrobras and the Trustee hereby agree, for the equal and ratable benefit of all Holders, as follows:

ARTICLE 1

DEFINITIONS

Section 1.01.Defined Terms. All capitalized terms used but not defined herein shall have the meanings ascribed to such terms in the Indenture, as supplemented and amended hereby. All definitions in the Original Indenture shall be read in a manner consistent with the terms of this First Supplemental Indenture.

Section 1.02.Additional Definitions. (a) For the benefit of the Holders of the Notes, Section 1.01 of the Original Indenture shall be amended by adding the following new definitions:

“Closing Date” means November 1, 2007.

“Comparable Treasury Issue” means the United States Treasury security or securities selected by an Independent Investment Banker as having an actual or interpolated maturity comparable to the remaining term of Notes to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of a comparable maturity to the remaining term of such Notes.

“Comparable Treasury Price” means, with respect to any Redemption Date, (1) the average of the Reference Treasury Dealer Quotations for such Redemption Date, after excluding the highest and lowest such Reference Treasury Dealer Quotation or (2) if the Trustee obtains fewer than four such Reference Treasury Dealer Quotations, the average of all such quotations.

“Default Rate” has the meaning set forth in Section 2.01(g) herein.

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“Denomination Currency” has the meaning set forth in Section 2.03(b) herein.

“Independent Investment Banker” means one of the Reference Treasury Dealers appointed by the Company.

“Interest Period” means the period beginning on an Interest Payment Date and ending on the day before the next Interest Payment Date, except that the first Interest Period shall be the period beginning on the Closing Date and ending on the day before the next Interest Payment Date.

“Judgment Currency” has the meaning set forth in Section 2.03(b) herein.

“Lien” means any mortgage, pledge, lien, hypothecation, security interest or other charge or encumbrance on any property or asset, including, without limitation, any equivalent created or arising under applicable law.

“Make Whole Amount” has the meaning set forth in Section 2.01(k) herein.

“Material Subsidiary” means, as to any Person, any Subsidiary of such Person which, on any given date of determination, accounts for more than 10% of Petrobras’ total consolidated assets, as such total assets are set forth on the most recent consolidated financial statements of Petrobras prepared in accordance with U.S. GAAP (or if Petrobras does not prepare financial statements in U.S. GAAP, consolidated financial statements prepared in accordance with Brazilian generally accepted accounting principles).

“Offering Document” shall have the meaning set forth in the recitals to the First Supplemental Indenture.

“Payment Account” has the meaning set forth in Section 2.01(h) herein.

“Permitted Lien” means a:

(a)  Lien arising by operation of law, such as merchants’, maritime or other similar Liens arising in the Company’s ordinary course of business or that of any Subsidiary or Lien in respect of taxes, assessments or other governmental charges that are not yet delinquent or that are being contested in good faith by appropriate proceedings;

(b)  Lien arising from the Company’s obligations under performance bonds or surety bonds and appeal bonds or similar obligations incurred in the ordinary course of business and consistent with the Company’s past practice;

(c)  Lien arising in the ordinary course of business in connection with Indebtedness maturing not more than one year after the date on which such Indebtedness was originally incurred and which is related to the financing of export, import or other trade transactions;

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(d)  Lien granted upon or with respect to any assets hereafter acquired by the Company or any Subsidiary to secure the acquisition costs of such assets or to secure Indebtedness incurred solely for the purpose of financing the acquisition of such assets, including any Lien existing at the time of the acquisition of such assets as long as the maximum amount so secured shall not exceed the aggregate acquisition costs of all such assets or the aggregate Indebtedness incurred solely for the acquisition of such assets, as the case may be;

(e)  Lien granted in connection with the Indebtedness of a Wholly-Owned Subsidiary owing to the Company or another Wholly-Owned Subsidiary;

(f)  Lien existing on any asset or on any stock of any Subsidiary prior to the acquisition thereof by the Company or any Subsidiary as long as such Lien is not created in anticipation of such acquisition;

(g)  Lien existing as of the date of the Indenture;

(h)  Lien resulting from the Indenture or the Standby Purchase Agreement;

(i)  Lien incurred in connection with the issuance of debt or similar securities of a type comparable to those already issued by the Company, on amounts of cash or cash equivalents on deposit in any reserve or similar account to pay interest on such securities for a period of up to 24 months as required by any Rating Agency as a condition to such Rating Agency rating such securities investment grade or as is otherwise consistent with market conditions at such time, as such conditions are satisfactorily demonstrated to the Trustee;

(j)  Lien granted or incurred to secure any extension, renewal, refinancing, refunding or exchange (or successive extensions, renewals, refinancings, refundings or exchanges), in whole or in part, of or for any Indebtedness secured by Lien referred to in paragraphs (a) through (i) above (but not paragraph (c)), provided that such Lien does not extend to any other property, the principal amount of the Indebtedness secured by such Lien is not increased, and in the case of paragraphs (a), (b), and (c), the obligees meet the requirements of such paragraphs; and

(k)  Lien in respect of Indebtedness the principal amount of which in the aggregate, together with all Liens not otherwise qualifying as the Company’s Permitted Liens pursuant to clauses (a) through (j) of this definition, does not exceed 15% of the Company’s consolidated total assets (as determined in accordance with U.S. GAAP) at any date as at which the Company’s balance sheet is prepared and published in accordance with applicable Law.

“Reference Treasury Dealer” means each of UBS Securities LLC and Morgan Stanley & Co. Incorporated or their affiliates which are primary United States government securities dealers and two other leading primary United States government securities dealers in New York City reasonably designated by the Company; provided, however, that if any of the foregoing shall cease to be a primary United States government securities dealer in New York

4

City (a “Primary Treasury Dealer”), the Company shall substitute therefore another Primary Treasury Dealer.

“Reference Treasury Dealer Quotation” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Trustee, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Trustee by such Reference Treasury Dealer at 3:30 pm New York time on the third business day preceding such redemption date.

“Treasury Rate” means, with respect to any Redemption Date, the rate per annum equal to the semiannual equivalent yield to maturity or interpolated maturity (on a day count basis) of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such Redemption Date.

ARTICLE 2

TERMS OF THE NOTES

Section 2.01.General. In accordance with Section 3.01 of the Original Indenture, the following terms relating to the Notes are hereby established:

(a)Title: The Notes shall constitute a series of Securities having the title “5.875% Global Notes due 2018.”

(b)Aggregate Amount: The aggregate principal amount of the Notes that may be initially authenticated and delivered under the First Supplemental Indenture shall be US$1,000,000,000. As provided in the Original Indenture, the Company may, from time to time, without the consent of the Holders of Notes, issue Add On Notes having identical terms (including CUSIP, ISSN and other relevant identifying characteristics as the Notes), so long as, on the date of issuance of such Add On Notes: (i) no Default or Event of Default shall have occurred and then be continuing, or shall occur as a result of the issuance of such Add On Notes, (ii) such Add On Notes shall rank pari passu with the Notes and shall have identical terms, conditions and benefits as the Notes and be part of the same series as the Notes, (iii) the Company and the Trustee shall have executed and delivered a further supplemental indenture to the Indenture providing for the issuance of such Add On Notes and reflecting such amendments to the Indenture as may be required to reflect the increase in the aggregate principal amount of the Notes resulting from the issuance of the Add On Notes, (iv) Petrobras and the Trustee shall have executed and delivered an amended Standby Purchase Agreement reflecting the increase in the aggregate principal amount of the Notes resulting from the issuance of the Add On Notes and (v) the Trustee shall have received all such opinions and other documents as it shall have requested, including an Opinion of Counsel stating that such Add On Notes are authorized and permitted by the Indenture and all conditions precedent to the issuance of such Add On Notes have been complied with by the Company and Petrobras. All Add On Notes issued hereunder will, when issued, be considered Notes for all purposes hereunder and will be subject to and take the benefit of all of the terms, conditions and provisions of this Indenture.

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(c)Ranking: The Notes (including the Add On Notes) shall be general senior unsecured and unsubordinated obligations of the Company and shall at all times rank pari passu among themselves and at least equal in right of payment with all of the Company’s other present and future unsecured and unsubordinated obligations from time to time outstanding that are not, by their terms, expressly subordinated in right of payment to the Notes.

(d)Maturity: The entire outstanding principal of the Notes shall be payable in a single installment on March 1, 2018 (the “Stated Maturity”). No payments in respect of the principal of the Notes shall be paid prior to the Stated Maturity except in the case of the occurrence of an Event of Default and acceleration of the aggregate outstanding principal amount of the Notes, upon redemption prior to the Stated Maturity pursuant to Section 11.08 of the Original Indenture or pursuant to 2.01(l) and (m) hereof.

(e)Interest: Interest shall accrue on the Notes at the rate of 5.875% per annum until all required amounts due in respect of the Notes have been paid. All interest shall be paid by the Company to the Trustee and distributed by the Trustee in accordance with this Indenture semiannually in arrears on March 1 and September 1 of each year (or, as provided in the Original Indenture, if such date is not a Business Day, the next succeeding Business Day following such day) during which any portion of the Notes shall be Outstanding (each, an “Interest Payment Date”), commencing on March 1, 2008, to the Person in whose name a Note is registered at the close of business on the preceding Regular Record Date (which shall mean, with respect to any payment to be made on an Interest Payment Date, the Business Day that is ten Business Days prior to such Interest Payment Date.) As provided in the Original Indenture, (i) interest shall be calculated based on a 360-day year of twelve 30-day months, (ii) payment of principal and interest and other amounts on the Notes will be made at the Corporate Trust Office of the Trustee in New York City, or such other paying agent office in the United States as the Company appoints, in the form provided for in Section 10.08 of the Original Indenture, (iii) all such payments to the Trustee shall be made by the Company by depositing immediately available funds in U.S. dollars one Business Day prior to the relevant Interest Payment Date to the Payment Account and (iv) so long as any of the Notes remain Outstanding, the Company shall maintain a paying agent in New York City.

(f)Default Rate: Upon the occurrence and during the continuation of an Event of Default, (i) interest on the outstanding principal amount of the Notes shall accrue on the Notes at a rate equal to 1.0% per annum above the interest rate on the Notes at that time (the “Default Rate”) and (ii) to the fullest extent permitted by law, interest shall accrue on the amount of any interest, fee, Additional Amounts, or other amount payable under the Indenture and the Notes that is not paid when due, from the date such amount was due until such amount shall be paid in full, excluding the date of such payment, at the Default Rate.

(h)Payment Account: On the Closing Date, the Trustee shall establish (and shall promptly notify the Company of the establishment of such account, including the relevant account numbers and other relevant identifying details) and, until the Notes and all accounts due in respect thereof have been paid in full, maintain a special purpose non-interest bearing trust account (the “Payment Account”) into which all payments required to be made by the Company under or with respect to the Notes shall be deposited. The Company agrees that the Payment

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Account shall be maintained in the name of the Trustee and under its sole dominion and control (acting on behalf of the Holders of the Notes) and used solely to make payments of principal, interest and other amounts from time to time due and owing on, or with respect to, the Notes. No funds contained in the Payment Account shall be used for any other purpose or in any manner not expressly provided for herein nor shall the Company or any other Person have an interest therein or amounts on deposit therein. All amounts on deposit in the Payment Account on any Interest Payment Date after the Trustee has paid all amounts due and owing to the holders of the Notes as of such Interest Payment Date shall be retained in the Payment Account and used by the Trustee to pay any amounts due and owing to the Holders of the Notes on the next succeeding Interest Payment Date.

(i)Form and Denomination: The Notes shall be issuable in whole in the registered form of one or more Global Notes (without coupons), in minimum denominations of US$2,000 and integral multiples of US$1,000 in excess thereof, and shall be transferable in integral multiples of US$2,000 and integral multiples of US$1,000 in excess thereof and the Depository for such Global Notes shall be The Depository Trust Company, New York, New York.

(j)Standby Purchase Agreement: The Notes shall have the benefit of the Standby Purchase Agreement in the manner provided in Article 3 of this First Supplemental Indenture.

(k)Rating: The Notes can be issued without the requirement that they have any rating from a nationally recognized statistical rating organization.

(l)Optional Early Redemption. The Notes are subject to redemption at the Company’s option before the Stated Maturity in whole or in part, upon not less than 30 but no more than 60 days’ notice, at a Redemption Price equal to the greater of (A) 100% of the principal amount of such Notes and (B) the sum of the present values of the remaining scheduled payments of principal and interest thereon (exclusive of interest accrued to the date of redemption) discounted to the Redemption Date on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at, in each case, the Treasury Rate plus 25 basis points (the “Make Whole Amount”), plus in each case, accrued interest on the principal amount of such Notes to (but not including) the date of redemption.

(m)Early Redemption Solely for Tax Reasons. Pursuant to Section 11.08 of the Original Indenture, the Notes may be redeemed at the option of the Company, in whole but not in part, at any time at a Redemption Price equal to the principal amount thereof plus accrued interest to the date fixed for redemption if as a result of any change in or amendment to the laws or regulations or ruling promulgated thereunder of the jurisdiction in which the Company is incorporated (or, in the case of a successor Person to the Company, of the jurisdiction in which such successor Person is organized or any political subdivision or taxing authority thereof or therein) or any change in the official application or interpretation of such laws, regulations or rulings, or any change in the official application of or interpretation of, or any execution of or amendment to, any treaty or treaties affecting taxation to which such jurisdiction or such political subdivision or taxing authority (or such other jurisdiction or political subdivision or taxing

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authority) is a party, which change, execution or amendment becomes effective on or after the date hereof (or in the case of a successor Person to the Company, the date on which such successor Person became such pursuant to Section 8.01 and 8.02 of the Original Indenture), the Company would be required to pay Additional Amounts pursuant to Section 10.10 of the Original Indenture. For purposes of Section 11.08 of the Original Indenture, the reincorporation of the Company shall be treated as the adoption of a successor entity, provided, however, that redemption under Section 11.08 of the Original Indenture shall not be available if the reincorporation was performed in anticipation of a change in, execution of or amendment to any laws or treaties or the official application or interpretation of any laws or treaties of such new jurisdiction of incorporation that would result in an obligation to pay Additional Amounts.

(n)Conversion: The Notes will not be convertible into, or exchangeable for, any other securities.

Section 2.02.Amendments to Article Five Relating to Events of Default. (a) Restated Events of Default: As it applies to the Notes, Section 5.01 of the Original Indenture shall be amended to read in its entirety as follows:

"Section 5.01  Events of Default

“Event of Default,” wherever used herein with respect to the Notes, means any one of the following events (whatever the reason for such Event of Default and whether it shall be voluntary or involuntary or be effected by operation of law or pursuant to any judgment, decree or order of any court or any order, rule or regulation of any administrative or governmental body):

1.The Company shall fail to make any payment in respect of principal on any of the Notes whether on the Stated Maturity, upon redemption or prior to the Maturity or otherwise in accordance with the terms of the Notes and this Indenture, non-payment of which shall continue for a period of three calendar days and the Trustee shall not have otherwise received such amounts from Petrobras under the Standby Purchase Agreement, or otherwise by the end of such three calendar day period;

2.The Company shall fail to make any payment in respect of any interest or other amounts due on or with respect to the Notes (including Additional Amounts, if any) in accordance with the terms of the Notes and this Indenture, non-payment of which shall continue for a period of 30 calendar days and the Trustee shall not have otherwise received such amounts from Petrobras under the Standby Purchase Agreement, or otherwise by the end of such 30 calendar day period;

3.The Company or Petrobras shall fail to perform, or breach, any term, covenant, agreement or obligation contained in this Indenture or the Standby Purchase Agreement and such failure (other than any failure to make any payment under the Standby Purchase Agreement, for which there is no cure) is either incapable of remedy or continues for a period of 60 calendar days (inclusive of any time frame contained in any such term, covenant, agreement or obligation for compliance thereunder) after there has been received by the Company or Petrobras from the Trustee or the Holders of at least

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25% in principal amount of the Outstanding Securities of that series a written notice specifying such default or breach and requiring it to be remedied and stating that such notice is a “Notice of Default” hereunder;

4.The maturity of any Indebtedness of the Company, Petrobras or any Material Subsidiary in a total aggregate principal amount of US$100,000,000 or more is accelerated in accordance with the terms of that Indebtedness, it being understood that prepayment or redemption by the Company, Petrobras or the relevant Material Subsidiary of any Indebtedness is not acceleration for this purpose;

5.One or more final and non-appealable judgments or final decrees is entered against the Company, Petrobras or any Material Subsidiary thereof involving in the aggregate a liability (not theretofore paid or covered by insurance) of US$100,000,000 (or its equivalent in another currency) or more, and all such judgments or final decrees shall not have been vacated, discharged or stayed within 120 calendar days after the rendering thereof;

6.The Company, Petrobras or any Material Subsidiary thereof stops payment of, or is generally unable to pay, its debts as and when they become due except (i) as is otherwise expressly provided under this Indenture or the Standby Purchase Agreement, or (ii) in the case of a winding-up, dissolution or liquidation for the purpose of and followed by a consolidation, merger, conveyance or transfer, the terms of which shall have been approved by a resolution of a meeting of the Holders;

7.Proceedings are initiated against the Company, Petrobras or any Material Subsidiary thereof under any applicable bankruptcy, reorganization, insolvency, moratorium or intervention law or law with similar effect, or under any other law for the relief of, or relating to, debtors, and any such proceeding is not dismissed or stayed within 90 daysafter the entering of such proceeding, or an administrator, receiver, trustee, manager, fiduciary, statutory manager, intervener or assignee for the benefit of creditors (or other similar official) is appointed to take possession or control of, or a distress, execution, attachment or sequestration or other process is levied, enforced upon, sued out or put in force against, all or any material part of the undertaking, property, assets or revenues of the Company, Petrobras or any Material Subsidiary thereof and is not discharged or removed within 90 days;

8.The Company, Petrobras or any Material Subsidiary thereof commences voluntarily or consents to judicial, administrative or other proceedings relating to it under any applicable bankruptcy, reorganization, insolvency, moratorium or intervention law or law with similar effect, or under any other law for the relief of, or relating to, debtors, or makes or enters into any composition, concordata or other similar arrangement with its creditors, or appoints or applies for the appointment of an administrator, receiver, trustee, manager, fiduciary, statutory manager, intervener or assignee for the benefit of creditors (or other similar official) to take possession or control of the whole or any material part of its undertaking, property, assets or revenues, or takes any judicial, administrative or

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other similar proceeding under any law for a readjustment or deferment of its Indebtedness or any part of it;

9.An effective resolution is passed for, or any authorized action is taken by any court of competent jurisdiction, directing the winding-up, dissolution or liquidation of the Company, Petrobras or any Material Subsidiary thereof (other than in any of the circumstances referred to as exceptions in paragraph (6) above);

10.Any event occurs that under the laws of any relevant jurisdiction has substantially the same effect as any of the events referred to in any of paragraphs (6), (7), (8) or (9) of this Section 5.01;

11.This Indenture, the Notes, the Standby Purchase Agreement or any part thereof shall cease to be in full force and effect or binding and enforceable against the Company or Petrobras, it becomes unlawful for the Company or Petrobras to perform any material obligation under this Indenture, the Notes or the Standby Purchase Agreement, or the Company or Petrobras shall contest the enforceability of this Indenture, the Notes or the Standby Purchase Agreement or deny that it has liability under this Indenture, the Notes or the Standby Purchase Agreement;

12.Petrobras fails to retain at least 51% direct or indirect ownership of the outstanding voting and economic interests (equity or otherwise) of and in the Company.”

Section 2.03. Amendments to Article 10 Relating to Covenants.

(a) Statement of Officers as to Default and Notices of Events of Default: As it applies to the Notes, Section 10.05 of the Original Indenture shall be amended by deleting the second sentence in its entirety and replacing it with the following:

“Within 10 calendar days (or promptly with respect to Events of Default pursuant to Sections 5.01(4), 5.01(5), 5.01(6), 5.01(7), 5.01(8), 5.01(9) and 5.01(10) hereunder and in any event no later than 10 calendar days) after the Company becomes aware or should reasonably become aware of the occurrence of an Event of Default pursuant to Section 5.01 hereunder, the Company shall provide notice to the Trustee of such occurrence, accompanied by an Officer’s Certificate of the Company setting forth the details thereof.”

(b)Additional Covenants Applicable to the Notes: As it applies to the Notes, Article 10 of the Original Indenture shall be amended to include the following:

"Section 10.11     Use of Proceeds.

The Company will use the proceeds from the offer and sale of the Notes after the deduction of any commissions principally for general corporate purposes, including the financing of the purchase of oil product imports and the repayment of existing trade-related debt and intercompany loans. The Company may also lend the proceeds from the offer and sale of the Notes to Petrobras for use for its general corporate purposes.

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Section 10.12      Negative Pledge

So long as any Note remains Outstanding, the Company will not create or permit any Lien, other than a Permitted Lien, on any of the Company’s assets to secure (a) any of the Company’s Indebtedness or (b) the Indebtedness of any other Person, unless the Company contemporaneously creates or permits such Lien to secure equally and ratably the Company’s obligations under the Notes and this Indenture or the Company provides such other security for the Notes as is duly approved by a resolution of the Holders of the Notes in accordance with this Indenture. In addition, the Company will not allow any of the Company’s Subsidiaries to create or permit any Lien, other than a Permitted Lien, on any of its assets to secure (a) any of the Company’s Indebtedness, (b) any of its own Indebtedness or (c) the Indebtedness of any other Person, unless it contemporaneously creates or permits the Lien to secure equally and ratably the Company’s obligations under the Notes and this Indenture or the Company provides such other security for the Notes as is duly approved by a resolution of the Holders of the Notes in accordance with the Indenture.

Section 10.13    Currency Rate Indemnity. (a) The Company shall (to the extent lawful) indemnify the Trustee and the Holders of the Notes and keep them indemnified against:

(i)      in the case of nonpayment by the Company of any amount due to the Trustee, on behalf of the Holders of the Notes, under the Indenture any loss or damage incurred by any of them arising by reason of any variation between the rates of exchange used for the purposes of calculating the amount due under a judgment or order in respect thereof and those prevailing at the date of actual payment by the Company; and

(ii)       any deficiency arising or resulting from any variation in rates of exchange between (i) the date as of which the local currency equivalent of the amounts due or contingently due under the Indenture or in respect of the Notes is calculated for the purposes of any bankruptcy, insolvency or liquidation of the Company, and (ii) the final date for ascertaining the amount of claims in such bankruptcy, insolvency or liquidation. The amount of such deficiency shall be deemed not to be increased or reduced by any variation in rates of exchange occurring between the said final date and the date of any bankruptcy, insolvency or liquidation or any distribution of assets in connection therewith.

(b)          The Company agrees that, if a judgment or order given or made by any court for the payment of any amount in respect of its obligations hereunder is expressed in a currency (the “Judgment Currency”) other than U.S. dollars (the “Denomination Currency”), it will indemnify the relevant Holder and the Trustee against any deficiency arising or resulting from any variation in rates of exchange between the date at which the amount in the Denomination Currency is notionally converted into the amount in the Judgment Currency for the purposes of such judgment or order and the date of actual payment thereof.

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(c)          The above indemnities shall constitute separate and independent obligations of the Company from its obligations under the Indenture, will give rise to separate and independent causes of action, will apply irrespective of any indulgence granted from time to time and will continue in full force and effect notwithstanding any judgment or the filing of any proof or proofs in any bankruptcy, insolvency or liquidation of the Company for a liquidated sum or sums in respect of amounts due under the Indenture or the Notes.”

Section 2.04.   Application of the Article of the Indenture Regarding Defeasance and Covenant Defeasance. The provisions of Sections 14.01, 14.02 and 14.03 of the Original Indenture shall apply to the Notes.

ARTICLE 3

STANDBY PURCHASE AGREEMENT

Section 3.01.     Execution. The Trustee is hereby authorized and directed to execute and deliver the Standby Purchase Agreement and to perform all of its duties and obligations thereunder.

Section 3.02.     Enforcement. The Trustee shall enforce the provisions of the Standby Purchase Agreement against Petrobras in accordance with the terms thereof and the terms of the Indenture and Petrobras, by execution of this First Supplemental Indenture, and by so agreeing to become a party to the Indenture, agrees that each Holder of the Notes shall have direct rights under the Standby Purchase Agreement as if it were a party thereto

.Section 3.03.     Petrobras hereby (i) acknowledges and agrees to be bound by the provisions of Sections 1.08 and 3.14 of the Original Indenture and (ii) confirms that (A) its obligations under the Standby Purchase Agreement shall be issued pursuant to the Indenture and (B) it intends for the Holders of the Notes, in addition to those rights under the Standby Purchase Agreement as provided therein, to be entitled to the benefits of the Indenture with respect to their rights against Petrobras under the Standby Purchase Agreement.

Section 3.04.     Definition of the Term “Securities.” For all purposes relating to the Notes, the term “Securities” in Section 1.01 of the Original Indenture shall be amended by inserting the following at the end thereof: “All references herein to any Securities shall be deemed to include the rights of the Holder thereof under any standby purchase agreement or guarantee arrangement entered into by Petrobras with the Trustee in connection with the issuance of such Securities pursuant to Section 3.14 hereof, which are an integral part of such Securities.”

ARTICLE 4

MISCELLANEOUS

Section 4.01.   Effect of the First Supplemental Indenture. This First Supplemental Indenture supplements the Indenture and shall be a part, and subject to all the terms, thereof. The Original Indenture, as supplemented and amended by this First Supplemental Indenture, is in

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all respects ratified and confirmed, and the Original Indenture and this First Supplemental Indenture shall be read, taken and construed as one and the same instrument. All provisions included in this First Supplemental Indenture supersede any conflicting provisions included in the Original Indenture unless not permitted by law. The provisions of this First Supplemental Indenture are intended to apply solely to the Notes and the Holders thereof and shall not apply to any future issuance of securities by the Company (other than any Add On Notes as provided herein) and all references to provisions of the Original Indenture herein amended and restated or otherwise modified shall have effect solely with respect to the Notes contemplated in this First Supplemental Indenture. The Trustee accepts the trusts created by the Original Indenture, as supplemented by this First Supplemental Indenture, and agrees to perform the same upon the terms and conditions of the Original Indenture, as supplemented by this First Supplemental Indenture.

Section 4.02.   Governing Law. This First Supplemental Indenture shall be governed by, and construed in accordance with, the laws of the State of New York.

Section 4.03.   Trustee Makes No Representation. The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this First Supplemental Indenture or for or in respect of the recitals contained herein, all of which are made solely by the Company and Petrobras.

Section 4.04.   Effect of Headings. The section headings herein are for convenience only and shall not affect the construction of this First Supplemental Indenture.

Section 4.05.   Counterparts. The parties may sign any number of copies of this First Supplemental Indenture. Each signed copy shall be an original, but all of them shall represent the same agreement.

[SIGNATURE PAGE TO FOLLOW IMMEDIATELY]

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IN WITNESS WHEREOF, the parties have caused this First Supplemental Indenture to be duly executed by their respective officers thereunto duly authorized as of the day and year first above written.

PETROBRAS INTERNATIONAL FINANCE COMPANY
By: /s/ Theodore M. Helms
	Name: Theodore M. Helms Title:   Attorney-in-Fact
PETRÓLEO BRASILEIRO S.A. – PETROBRAS
By: /s/ Theodore M. Helms
	Name: Theodore M. Helms Title:    Executive Manager
WITNESSES:
1. /s/  David Flechner
	Name: David Flechner
2. /s/ Iris H. Castellano
	Name:  Iris H. Castellano

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STATE OF NEW YORK	)
	)	ss:
COUNTY OF NEW YORK	)

On this 1st day of November, 2007, before me personally cameTheodore Helms, to me known, who, being by me duly sworn, did depose and say that he is the Attorney-in-Fact of Petrobras International Finance Company - PIFCo, a corporation described in and which executed the foregoing instrument and acknowledge that said instrument to be the free act and deed of said entity.

On this 1st day of November, 2007, before me personally came Theodore Helms, to me known, who, being by me duly sworn, did depose and say that he is the Attorney-in-Fact of Petróleo Brasileiro S.A. - Petrobras, a corporation described in and which executed the foregoing instrument and acknowledge that said instrument to be the free act and deed of said entity.

On this 1st day of November, 2007, before me personally came David Flechner and Iris Castellano to me personally known, who being by me sworn, did depose and say that they signed their names to the foregoing instrument as witnesses.

[Notarial Seal]	/s/ Risa Laurie Chubinsky   Notary Public COMMISSION EXPIRES
	Risa Laurie Chubinsky Notary Public, State of New York No. 01CH6172040 Qualified in Kings County Certificate Filed in New York County Commission Expires Aug. 6, 2011

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THE BANK OF NEW YORK, as Trustee
By: /s/ John T. Needham, Jr.
	Name: John T. Needham, Jr. Title:   Vice President
WITNESSES:
1. /s/ Kevin F. Binnie
	Name: Kevin F. Binnie  Title:   Vice President
2. /s/ Lucia Jaklitsch
	Name: Lucia Jaklitsch Title:   Vice President

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STATE OF NEW YORK	)
	)	ss:
COUNTY OF NEW YORK	)

On this 1st day of November, 2007 before me, a notary public within and for said county, personally appeared Kevin F. Binnie, to me personally known who being duly sworn, did say that John T. Meedham, Jr. is a Vice President of The Bank of New York, one of the persons described in and which executed the foregoing instrument, and acknowledge said instrument to be the free act and deed of said corporation.

On this 1st day of November, 2007, before me personally came Kevin F. Binnie and Lucia Jaklitsch to me personally known, who being by me sworn, did depose and say that they signed their names to the foregoing instrument as witnesses.

/s/ Emily Fayan                                                 

Notary Public

Emily Fayan
Notary Public, State of New York
No. 01FA4737006
Qualified in Kings County
Certificate Filed in New York County
Commission Expires Dec. 31, 2009

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Exhibit A

Form of 5.875% Global Note due 2018

GLOBAL NOTE

THIS NOTE IS A GLOBAL NOTE WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITORY OR A NOMINEE THEREOF. THIS NOTE MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A NOTE REGISTERED, AND NO TRANSFER OF THIS NOTE IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH DEPOSITORY OR ITS NOMINEE EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT AND SUCH CERTIFICATE ISSUED IN EXCHANGE FOR THIS CERTIFICATE IS REGISTERED IN THE NAME OF CEDE & CO., OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY, ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL, SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

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PETROBRAS INTERNATIONAL FINANCE COMPANY

5.875% GLOBAL NOTES DUE 2018

No. 1
CUSIP No.: 71645WAM3
ISIN No.: US71645WAM38
Common Code: 032961614

Principal Amount: US$500,000,000

Initial Issuance Date: November 1, 2007

This Note is one of a duly authorized issue of notes of PETROBRAS INTERNATIONAL FINANCE COMPANY, an exempted company with limited liability organized under the laws of the Cayman Islands (the “Issuer”), designated as its 5.875% Global Notes Due 2018 (the “Notes”), issued in an initial aggregate principal amount of US$1,000,000,000 under the First Supplemental Indenture (the “First Supplemental Indenture”), effective as of November 1, 2007, by and among the Issuer, The Bank of New York, a New York banking corporation, as Trustee (the “Trustee”), and Petróleo Brasileiro S.A. - PETROBRAS, a mixed capital company (sociedade de economia mista) organized under the laws of Brazil (“Petrobras”), to the Indenture, dated as of December 15, 2006 (the “Original Indenture”, and as supplemented by the First Supplemental Indenture and any further supplements thereto with respect to the Notes, the “Indenture”), by and among the Issuer and the Trustee. Reference is hereby made to the Indenture for a statement of the respective rights, limitations of interests, benefits, obligations and duties thereunder of the Issuer, the Trustee and the Holders, and of the terms upon which the Notes are, and are to be, authenticated and delivered. All capitalized terms used in this Note which are defined in the Indenture and not otherwise defined herein shall have the meanings assigned to them in the Indenture.

The Issuer, for value received, hereby promises to pay to Cede & Co. or its registered assigns, as nominee of The Depository Trust Company (“DTC”) and the Holder of record of this Note, the principal amount specified above in U.S. dollars on March 1, 2018 (or earlier as provided for in the Indenture) upon presentation and surrender hereof, at the office or agency of the Trustee referred to below.

As provided for in the Indenture, the Issuer promises to pay interest on the outstanding principal amount hereof, from the Closing Date, semi-annually on March 1 and September 1 of each year (or if such date is not a Business Day, the next succeeding Business Day following such day), commencing March 1, 2008 (each such date, an “Interest Payment Date”), at a rate equal to 5.875% per annum. Interest payable, and punctually paid or duly provided for, on this Note on any Interest Payment Date will, as provided in the Indenture, be paid in U.S. dollars to the Person in whose name this Note (or one or more predecessor Notes) is registered at the close of business on the relevant Regular Record Date for such interest payment.

Payment of the principal of and interest on this Note will be payable by wire transfer to a U.S. dollar account maintained by the Holder of this Note as reflected in the Security Register of the Trustee. In the event the date for any payment of the principal of or interest on any Note is not a Business Day, then payment will be made on the next Business Day

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with the same force and effect as if made on the nominal date of any such date for such payment and no additional interest will accrue on such payment as a result of such payment being made on the next succeeding Business Day. Interest accrued with respect to this Note shall be calculated based on a 360-day year of twelve 30-day months.

The Notes are subject to redemption by the Issuer on the terms and conditions specified in the Indenture.

This Note does not purport to summarize the Indenture, and reference is made to the Indenture for information with respect to the respective rights, limitations of interests, benefits, obligations and duties thereunder of the Issuer, the Trustee and the Holders.

If an Event of Default shall occur and be continuing, the outstanding principal amount of all the Notes may become or may be declared due and payable in the manner and with the effect provided in the Indenture.

Modifications of the Indenture may be made by the Issuer and the Trustee only to the extent and in the circumstances permitted by the Indenture.

The Notes shall be issued only in fully registered form, without coupons. Notes shall be issued in the form of beneficial interests in one or more global securities in denominations of US$2,000 and integral multiples of US$1,000 in excess thereof.

Prior to and at the time of due presentment of this Note for registration of transfer, the Issuer, the Trustee and any agent of the Issuer or the Trustee may treat the Person in whose name this Note is registered as the owner hereof for all purposes, whether or not this Note is overdue, and neither the Issuer, the Trustee nor any agent thereof shall be affected by notice to the contrary.

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

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Unless the certificate of authentication hereon has been duly executed by the Trustee by manual signature, this Note shall not be entitled to any benefit under the Indenture, or be valid or obligatory for any purpose.

THIS NOTE SHALL BE CONSTRUED IN ACCORDANCE WITH, AND GOVERNED BY, THE LAWS OF THE STATE OF NEW YORK.

IN WITNESS WHEREOF, the Issuer has caused this Note to be duly executed.

PETROBRAS INTERNATIONAL FINANCE COMPANY
By:
	Name: Title:
WITNESSES:
1.
	Name:
2.
	Name:

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PETROBRAS INTERNATIONAL FINANCE COMPANY

5.875% GLOBAL NOTES DUE 2018

No. 2
CUSIP No.: 71645WAM3ISIN
No.: US71645WAM38
Common Code: 032961614

Principal Amount: US$500,000,000

Initial Issuance Date: November 1, 2007

This Note is one of a duly authorized issue of notes of PETROBRAS INTERNATIONAL FINANCE COMPANY, an exempted company with limited liability organized under the laws of the Cayman Islands (the “Issuer”), designated as its 5.875% Global Notes Due 2018 (the “Notes”), issued in an initial aggregate principal amount of US$1,000,000,000 under the First Supplemental Indenture (the “First Supplemental Indenture”), effective as of November 1, 2007, by and among the Issuer, The Bank of New York, a New York banking corporation, as Trustee (the “Trustee”), and Petróleo Brasileiro S.A. - PETROBRAS, a mixed capital company (sociedade de economia mista) organized under the laws of Brazil (“Petrobras”), to the Indenture, dated as of December 15, 2006 (the “Original Indenture”, and as supplemented by the First Supplemental Indenture and any further supplements thereto with respect to the Notes, the “Indenture”), by and among the Issuer and the Trustee. Reference is hereby made to the Indenture for a statement of the respective rights, limitations of interests, benefits, obligations and duties thereunder of the Issuer, the Trustee and the Holders, and of the terms upon which the Notes are, and are to be, authenticated and delivered. All capitalized terms used in this Note which are defined in the Indenture and not otherwise defined herein shall have the meanings assigned to them in the Indenture.

The Issuer, for value received, hereby promises to pay to Cede & Co. or its registered assigns, as nominee of The Depository Trust Company (“DTC”) and the Holder of record of this Note, the principal amount specified above in U.S. dollars on March 1, 2018 (or earlier as provided for in the Indenture) upon presentation and surrender hereof, at the office or agency of the Trustee referred to below.

As provided for in the Indenture, the Issuer promises to pay interest on the outstanding principal amount hereof, from the Closing Date, semi-annually on March 1 and September 1 of each year (or if such date is not a Business Day, the next succeeding Business Day following such day), commencing March 1, 2008 (each such date, an “Interest Payment Date”), at a rate equal to 5.875% per annum. Interest payable, and punctually paid or duly provided for, on this Note on any Interest Payment Date will, as provided in the Indenture, be paid in U.S. dollars to the Person in whose name this Note (or one or more predecessor Notes) is registered at the close of business on the relevant Regular Record Date for such interest payment.

Payment of the principal of and interest on this Note will be payable by wire transfer to a U.S. dollar account maintained by the Holder of this Note as reflected in the Security Register of the Trustee. In the event the date for any payment of the principal of or interest on any Note is not a Business Day, then payment will be made on the next Business Day

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with the same force and effect as if made on the nominal date of any such date for such payment and no additional interest will accrue on such payment as a result of such payment being made on the next succeeding Business Day. Interest accrued with respect to this Note shall be calculated based on a 360-day year of twelve 30-day months.

The Notes are subject to redemption by the Issuer on the terms and conditions specified in the Indenture.

This Note does not purport to summarize the Indenture, and reference is made to the Indenture for information with respect to the respective rights, limitations of interests, benefits, obligations and duties thereunder of the Issuer, the Trustee and the Holders.

If an Event of Default shall occur and be continuing, the outstanding principal amount of all the Notes may become or may be declared due and payable in the manner and with the effect provided in the Indenture.

Modifications of the Indenture may be made by the Issuer and the Trustee only to the extent and in the circumstances permitted by the Indenture.

The Notes shall be issued only in fully registered form, without coupons. Notes shall be issued in the form of beneficial interests in one or more global securities in denominations of US$2,000 and integral multiples of US$1,000 in excess thereof.

Prior to and at the time of due presentment of this Note for registration of transfer, the Issuer, the Trustee and any agent of the Issuer or the Trustee may treat the Person in whose name this Note is registered as the owner hereof for all purposes, whether or not this Note is overdue, and neither the Issuer, the Trustee nor any agent thereof shall be affected by notice to the contrary.

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STATE OF NEW YORK	)
	)	ss:
COUNTY OF NEW YORK	)

On this 1st day of November, 2007, before me personally came __________, to me known, who, being by me duly sworn, did depose and say that he is the _______________ of Petrobras International Finance Company, a corporation described in and which executed the foregoing instrument and acknowledges that said instrument to be the free act and deed of said entity.

On this 1st day of November, 2007, before me personally came _____________ and ______________ to me personally known, who being by me sworn, did depose and say that they signed their names to the foregoing instrument as witnesses.

[Notarial Seal]

______________________
Notary Public

COMMISSION EXPIRES

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CERTIFICATE OF AUTHENTICATION

This is one of the Securities of the series designated therein referred to in the within mentioned Indenture.

Dated: November 1, 2007

The Bank of New York

As Trustee

By: ____________________

       Name:

       Title: Authorized Officer

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ASSIGNMENT FORM
For value received
hereby sells, assigns and transfers unto

(Please insert social security or
other identifying number of assignee)

(Please print or type name and address,including zip code, of assignee:)

the within Note and does hereby irrevocably constitute and appoint Attorney to transfer the Note on the books of the Note Registrar with full power of substitution in the premises.

Date: Your Signature:

(Sign exactly as your name
appears on the face of this Note)

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Exhibit B

Form of Standby Purchase Agreement

  [SEE EXHIBIT 4.1 TO THIS FORM 6-K]

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