EXHIBIT 4.1

NEITHER THIS SECURITY NOR ANY SECURITIES WHICH MAY BE ISSUED UPON EXERCISE OF THIS SECURITY HAVE BEEN REGISTERED WITH THE UNITED STATES SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY U.S. STATE OR OTHER JURISDICTION OR ANY EXCHANGE OR SELF-REGULATORY ORGANIZATION, IN RELIANCE UPON EXEMPTIONS FROM REGISTRATION UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED, AND SUCH OTHER LAWS AND REQUIREMENTS, AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD, EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT OR LISTING OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, SUCH REGISTRATION AND/OR LISTING REQUIREMENTS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH WILL BE REASONABLY ACCEPTABLE TO THE COMPANY.

JANUS RESOURCES, INC.

SERIES A COMMON STOCK PURCHASE WARRANT

No. A-0001

Date: July 12, 2013

Janus Resources, Inc., a Nevada corporation (the “Company”), hereby certifies that Jorg C. Gerlach, its permissible transferees, designees, successors and assigns (collectively, the “Holder”), for value received, is entitled to purchase from the Company at any time and from time to time commencing on the date first appearing above (the “Issuance Date”), up to and through 12:01a.m. (EST) July 11, 2019 (the “Termination Date”) up to [****] shares (each, a “Share” and collectively the “Shares”) of the Company’s common stock, par value $0.00001 (the “Common Stock”), subject to the vesting milestones set forth in Section 5, at an exercise price per Share of [****] (the “Exercise Price”). The number of Shares purchasable hereunder and the Exercise Price are subject to adjustment as provided in Section 4 hereof.

This Warrant is being issued pursuant to the terms of that certain Asset Purchase Agreement (the “Asset Purchase Agreement”) dated as of June 21, 2013, between Company and Holder. Capitalized but undefined terms used herein shall have the meaning set forth in the Asset Purchase Agreement.

1.   Method of Exercise; Payment.

(a)           Exercise. The purchase rights represented by this Warrant may be exercised, either for cash or on a cashless basis, pursuant to Section 1(b), by the Holder, in whole or in part, at any time, or from time to time, by the surrender of this Warrant (with the notice of exercise form (the “Notice of Exercise”) attached hereto as Exhibit A duly executed) at the principal office of the Company, and by paymentto the Company of an amount equal to the Exercise Price multiplied by the number of the Shares being purchased, which amount may be paid, at the election of the Holder, by wire transfer or certified check payable to the order of the Company. The person or persons in whose name(s) any certificate(s) representing Shares shall be issuable upon exercise of this Warrant shall be deemed to have become the holder(s) of record of, and shall be treated for all purposes as the record holder(s) of, the Shares represented thereby (and such Shares shall be deemed to have been issued) immediately prior to the close of business on the date or dates upon which this Warrant is exercised.

(b)           Cashless Exercise. This Warrant shall also be exercisable by means of a “cashless exercise” in which the Holder shall be entitled to receive a certificate for the number of Warrant Shares equal to the quotient obtained by dividing [(A-B) (X)] by (A), where:

(A) = the average of the high and low trading prices per share of Common Stock on the Trading Day preceding the date of such election as quoted on the OTC Markets Group Inc. QB tier (the “OTCQB”), or if the Common Stock is not then quoted on the OTCQB, then on such market or interdealer quotation system the Common Stock is then traded or quoted on;

1

(B) = the Exercise Price of this Warrant; and

(X) = the number of Warrant Shares issuable upon exercise of this Warrant in accordance with the terms of this Warrant and the Notice of Exercise.

(c)           Stock Certificates. In the event of any exercise of the rights represented by this Warrant, as promptly as practicable after this Warrant is surrendered and delivered to the Company along with all other appropriate documentation on or after the date of exercise and in any event within ten (10) days thereafter, the Company at its expense shall issue and deliver to the person or persons entitled to receive the same a certificate or certificates for the number of Shares issuable upon such exercise. In the event this Warrant is exercised in part, the Company at its expense will execute and deliver a new Warrant of like tenor exercisable for the number of Shares for which this Warrant may then be exercised.

(d)           Taxes. The issuance of the Shares upon the exercise of this Warrant, and the delivery of certificates or other instruments representing such Shares, shall be made without charge to the Holder for any tax or other charge in respect of such issuance.

2.   Warrant.

(a)           Transfer and Replacement. Subject to compliance with applicable securities laws, this Warrant and all rights hereunder (including, without limitation, any registration rights) are transferable, in whole or in part, upon surrender of this Warrant at the principal office of the Company or its designated agent, together with a written assignment of this Warrant substantially in the form attached hereto as Exhibit B duly executed by the Holder or its agent or attorney and funds sufficient to pay any transfer taxes payable upon the making of such transfer. Upon such surrender and, if required, such payment, the Company shall execute and deliver a new Warrant or Warrants in the name of the assignee or assignees and in the denomination or denominations specified in such instrument of assignment, and shall issue to the assignor a new Warrant evidencing the portion of this Warrant not so assigned, and this Warrant shall promptly be cancelled. A Warrant, if properly assigned, may be exercised by a new holder for the purchase of Warrant Shares without having a new Warrant issued. The Holder consents that the Company may, if it desires, permit the transfer of this Warrant out of the Holder’s name only when the Holder’s request for transfer is accompanied by an opinion of counsel reasonably satisfactory to the Company that neither the sale nor the proposed transfer results in a violation of the Securities Act of 1933, as amended (the “Securities Act”), or any applicable state “blue sky” laws. At any time prior to the exercise hereof, this Warrant may be exchanged upon presentation and surrender to the Company, alone or with other warrants of like tenor of different denominations registered in the name of the same Holder, for another warrant or warrants of like tenor in the name of such Holder exercisable for the aggregate number of Shares as the warrant or warrants surrendered.

(b)           Replacement of Warrant. Upon receipt of evidence reasonably satisfactory to the Company of the loss, theft, destruction, or mutilation of this Warrant and, in the case of any such loss, theft, or destruction, upon delivery of an indemnity agreement reasonably satisfactory in form and amount to the Company, or, in the case of any such mutilation, upon surrender and cancellation of this Warrant, the Company, at its expense, will execute and deliver in lieu thereof, a new Warrant of like tenor.

(c)           Cancellation. Payment of Expenses. Upon the surrender of this Warrant in connection with any transfer, exchange or replacement as provided in this Section 2, this Warrant shall be promptly canceled by the Company. The Holder shall pay all taxes and all other expenses (including legal expenses, if any, incurred by the Holder or transferees) and charges payable in connection with the preparation, execution and delivery of Warrants pursuant to this Section 2.

(d)           Warrant Register. The Company shall maintain, at its principal executive offices (or at the offices of the transfer agent for the Warrant or such other office or agency of the Company as it may designate by notice to the holder hereof), a register for this Warrant (the “Warrant Register”), in which the Company shall record the name and address of the person in whose name this Warrant has been issued, as well as the name and address of each transferee and each prior owner of this Warrant.

2

3.   Rights and Obligations of Holders of this Warrant.

The Holder of this Warrant shall not, by virtue hereof, be entitled to any rights of a shareholder in the Company, either at law or in equity; provided, however, that in the event any certificate representing shares of Common Stock or other securities is issued to the holder hereof upon exercise of this Warrant, such holder shall, for all purposes, be deemed to have become the holder of record of such Common Stock on the date on which this Warrant, together with a duly executed Notice of Exercise, was surrendered and payment of the aggregate Exercise Price was made, irrespective of the date of delivery of such Common Stock certificate.

4.   Adjustments.

During the Exercise Period, the Exercise Price and the number of Warrant Shares shall be subject to adjustment from time to time as provided in this Section 4.

(a)           Subdivision or Combination of Common Stock. If the Company at any time subdivides (by any stock split, stock dividend, recapitalization, reorganization, reclassification or otherwise) the shares of Common Stock acquirable hereunder into a greater number of shares, then, after the date of record for effecting such subdivision, the Exercise Price in effect immediately prior to such subdivision will be proportionately reduced. If the Company at any time combines (by reverse stock split, recapitalization, reorganization, reclassification or otherwise) the shares of Common Stock acquirable hereunder into a smaller number of shares, then, after the date of record for effecting such combination, the Exercise Price in effect immediately prior to such combination will be proportionately increased.

(b)           Voluntary Reduction of Exercise Price by the Company. The Company may at any time during the term of this Warrant reduce the then current Exercise Price to any amount and for any period of time deemed appropriate by the Board of Directors of the Company, without changing the number of shares then issuable upon exercise of this Warrant.

(c)           Reclassification, Merger or Sale. If the Company sells all, or substantially all, of its property to any other corporation, which is effected in such a manner that the holders of Common Stock shall be entitled to receive cash, stock, securities, or assets with respect to or in exchange for Common Stock, then, as a part of such transaction, lawful provision shall be made so that each Holder shall have the right thereafter to receive, upon the exercise hereof, the number of shares of stock or other securities or property of the Company, or of the successor corporation resulting from such consolidation or merger, or of the corporation to which the property of the Company has been sold, conveyed, leased or otherwise transferred, as the case may be, which the Holder would have been entitled to receive upon such capital reorganization, reclassification of capital stock, consolidation, merger, sale, conveyance, lease or other transfer, if such Warrant had been exercised immediately prior to such capital reorganization, reclassification of capital stock, consolidation, merger, sale, conveyance, lease or other transfer. In any such case, appropriate adjustments (as determined by the Board of Directors of the Company) shall be made in the application of the provisions set forth in this Warrant (including the adjustment of the Exercise Price and the number of Shares issuable upon the exercise of the Warrants) to the end that the provisions set forth herein shall thereafter be applicable, as near as reasonably may be, in relation to any shares or other property thereafter deliverable upon the exercise of the Warrants as if the Warrants had been exercised immediately prior to such capital reorganization, reclassification of capital stock, such consolidation, merger, sale, conveyance, lease or other transfer and the Warrant Holders had carried out the terms of the exchange as provided for by such capital reorganization, consolidation or merger. The Company shall not affect any such capital reorganization, consolidation, merger or transfer unless, upon or prior to the consummation thereof, the successor corporation or the corporation to which the property of the Company has been sold, conveyed, leased or otherwise transferred shall assume by written instrument the obligation to deliver to each Holder such shares of stock, securities, cash or property as in accordance with the foregoing provisions such Holder shall be entitled to purchase.

3

(d)           Distribution of Assets. In case the Company shall declare or make any distribution of its assets (including cash) to holders of Common Stock as a partial liquidating dividend, by way of return of capital or otherwise, then, after the date of record for determining shareholders entitled to such distribution, but prior to the date of distribution, the Holder shall have the right to exercise this Warrant within fourteen (14) calendar days prior to the date of such distribution of any or all of the shares of Common Stock subject hereto, to receive the amount of such assets which would have been payable to the holder had such holder been the holder of such shares of Common Stock on the record date for the determination of shareholders entitled to such distribution. If Holder does not exercise the Warrant pursuant to this Section 4(d), Holder shall have no rights to any distributions.

(e)           Notice of Adjustment. Upon the occurrence of any event which requires any adjustment of the Exercise Price, then, and in each such case, the Company shall give notice thereof to the holder of this Warrant, which notice shall state the Exercise Price resulting from such adjustment and the increase or decrease in the number of Warrant Shares purchasable at such price upon exercise, setting forth in reasonable detail the method of calculation and the facts upon which such calculation is based. Such calculation shall be certified by the Chief Financial Officer of the Company.

(f)           Minimum Adjustment of Exercise Price. No adjustment of the Exercise Price shall be made in an amount of less than 1% of the Exercise Price in effect at the time such adjustment is otherwise required to be made, but any such lesser adjustment shall be carried forward and shall be made at the time and together with the next subsequent adjustment which, together with any adjustments so carried forward, shall amount to not less than 1% of such Exercise Price.

(g)           No Fractional Shares. No fractional shares of Common Stock are to be issued upon the exercise of this Warrant, but the Company shall round up the number of shares to the issued.

(h)           Other Notices. In case at any time:

(i)   the Company shall declare any dividend upon the Common Stock payable in shares of stock of any class or make any other distribution (including dividends or distributions payable in cash out of retained earnings) to the holders of the Common Stock;

(ii)   the Company shall offer for subscription pro rata to the holders of the Common Stock any additional shares of stock of any class or other rights;

(iii)   there shall be any capital reorganization of the Company, or reclassification of the Common Stock, or consolidation or merger of the Company with or into, or sale of all or substantially all its assets to, another corporation or entity; or

(iv)   there shall be a voluntary or involuntary dissolution, liquidation or winding up of the Company;

4

then, in each such case, the Company shall give to the holder of this Warrant (a) notice of the date on which the books of the Company shall close or a record shall be taken for determining the holders of Common Stock entitled to receive any such dividend, distribution, or subscription rights or for determining the holders of Common Stock entitled to vote in respect of any such reorganization, reclassification, consolidation, merger, sale, dissolution, liquidation or winding-up and (b) in the case of any such reorganization, reclassification, consolidation, merger, sale, dissolution, liquidation or winding-up, notice of the date (or, if not then known, a reasonable approximation thereof by the Company) when the same shall take place. Such notice shall also specify the date on which the holders of Common Stock shall be entitled to receive such dividend, distribution, or subscription rights or to exchange their Common Stock for stock or other securities or property deliverable upon such reorganization, reclassification, consolidation, merger, sale, dissolution, liquidation, or winding-up, as the case may be. Such notice shall be given at least fourteen (14) days prior to the record date or the date on which the Company’s books are closed in respect thereto. Failure to give any such notice or any defect therein shall not affect the validity of the proceedings referred to in clauses (i), (ii), (iii) and (iv) above.

(i)           Certain Events. If any event occurs of the type contemplated by the adjustment provisions of this Section 4 but not expressly provided for by such provisions, the Company will give notice of such event as provided in Section 8 hereof, and the Company’s Board of Directors will make an appropriate adjustment in the Exercise Price and the number of shares of Common Stock acquirable upon exercise of this Warrant so that the rights of the holder shall be neither enhanced nor diminished by such event.

5.   Vesting of Warrants.

(a)           Subject to the earlier termination of this Warrant as provided in Section 5(b) the Shares issuable upon exercise of this Warrant in accordance with the terms hereof shall vest as follows:

(i)  [****];

(ii)  [****];

(iii)  [****];

(iv)  [****];

(v)  [****];

All determinations and calculations with respect to the satisfaction of the conditions to the vesting of any of the foregoing Shares shall be made by the Board of Directors of the Company or any committee thereof to which the Board of Directors has delegated such authority, in good faith in accordance with applicable law, the Articles of Incorporation and By-laws of the Company, in its sole discretion, and shall be final, conclusive and binding on all persons, including Holder, its permitted transferees, and the personal representative of its estate.

(b)           In the event of a Re-conveyance of Acquired Assets, this Warrant may only be exercised as to those Shares which have vested as of the date immediately preceding the date of the Re-conveyance of Acquired Assets, in accordance with Section 5 (a) above. Anything herein to the contrary notwithstanding, as of the date of the date of the Re-conveyance of Acquired Assets, no further Shares will vest hereunder.

5

6.   Legends.

Prior to issuance of the shares of Common Stock underlying this Warrant, all such certificates representing such shares shall bear a restrictive legend to the effect that the Shares represented by such certificate have not been registered under the Securities Act, and that the Shares may not be sold or transferred in the absence of such registration or an exemption therefrom, such legend to be substantially in the form of the bold-face language appearing at the top of Page 1 of this Warrant.

7.   Disposition of Warrants or Shares.

The Holder of this Warrant, each transferee hereof and any holder and transferee of any Shares, by his or its acceptance thereof, agrees that no public distribution of Warrants or Shares will be made in violation of the provisions of the Securities Act. Furthermore, it shall be a condition to the transfer of this Warrant that any transferee thereof deliver to the Company his or its written agreement to accept and be bound by all of the terms and conditions contained in this Warrant. Except as provided in the Asset Purchase Agreement, the Company has no obligation or intention to register for resale either this Warrant or the shares issuable upon exercise thereof.

8.   Notices.

Except as otherwise specified herein to the contrary, all notices, requests, demands and other communications required or desired to be given hereunder shall only be effective if given in writing by certified or registered U.S. mail with return receipt requested and postage prepaid; by private overnight delivery service (e.g. Federal Express); by facsimile transmission (if no original documents or instruments must accompany the notice); or by personal delivery. Any such notice shall be deemed to have been given (a) on the business day immediately following the mailing thereof, if mailed by certified or registered U.S. mail as specified above; (b) on the business day immediately following deposit with a private overnight delivery service if sent by said service; (c) upon receipt of confirmation of transmission if sent by facsimile transmission; or (d) upon personal delivery of the notice. All such notices shall be sent to the following addresses (or to such other address or addresses as a party may have advised the other in the manner provided in this Section 8):

If to the Company:

Janus Resources, Inc.

430 Park Avenue

Suite 702

New York, NY 10022

President and Chief Executive Officer

If to the Holder:

Jörg C. Gerlach, MD, PhD

Notwithstanding the time of effectiveness of notices set forth in this Section 8, a Notice of Exercise shall not be deemed effectively given until it has been duly completed and submitted to the Company together with this original Warrant and payment of the Exercise Price in a manner set forth in this Section 8.

6

9.   Limitation on Exercise.

Notwithstanding anything to the contrary contained herein, the number of shares of Common Stock that may be acquired by the Holder upon any exercise of this Warrant (or otherwise in respect hereof) shall be limited to the extent necessary to insure that, following such exercise (or other issuance), the total number of shares of Common Stock then beneficially owned by such Holder and its affiliates and any other persons whose beneficial ownership of Common Stock would be aggregated with the Holder’s for purposes of Section 13(d) of the Exchange Act, does not exceed 4.99% of the total number of the then issued and outstanding shares of Common Stock (including for such purpose the shares of Common Stock issuable upon such exercise). For such purposes, beneficial ownership shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. Holder may waive the restriction in whole or in part upon and effective after 61 days prior written notice to the Company to change the beneficial ownership to 9.99%, but not in excess thereof. This provision shall not restrict the number of shares of Common Stock which a Holder may receive or beneficially own in order to determine the amount of securities or other consideration that such Holder may receive in the event of a merger or other business combination or reclassification involving the Company.

10.   Governing Law.

This Agreement shall be governed by and construed solely and exclusively in accordance with and pursuant to the internal laws of the State of New York without regard to the conflicts of laws principles thereof. The parties hereto hereby expressly and irrevocably agree that any suit or proceeding arising directly and/or indirectly pursuant to or under this Agreement shall be brought solely in a federal or state court located in the City of New York. By its execution hereof, the parties hereby covenant and irrevocably submit to the in personam jurisdiction of the federal and state courts located in the City of New York, New York and agree that any process in any such action may be served upon any of them personally, or by certified mail or registered mail upon them or their agent, return receipt requested, with the same full force and effect as if personally served upon them in New York. The parties hereto expressly and irrevocably waive any claim that any such jurisdiction is not a convenient forum for any such suit or proceeding and any defense or lack of in personam jurisdiction with respect thereto. In the event of any such action or proceeding, the party prevailing therein shall be entitled to payment from the other party hereto of all of its reasonable counsel fees and disbursements.

11.   Successors and Assigns.

This Warrant shall be binding upon and shall inure to the benefit of the parties hereto and their respective successors and assigns.

12.   Headings.

The headings of various sections of this Warrant have been inserted for reference only and shall not affect the meaning or construction of any of the provisions hereof.

13.   Severability.

If any provision of this Warrant is held to be unenforceable under applicable law, such provision shall be excluded from this Warrant, and the balance hereof shall be interpreted as if such provision were so excluded.

7

14.   Modification and Waiver.

This Warrant and any provision hereof may be amended, waived, discharged or terminated only by an instrument in writing signed by the Company and the Holder.

15.   Specific Enforcement.

The Company and the Holder acknowledge and agree that irreparable damage would occur in the event that any of the provisions of this Warrant were not performed in accordance with their specific terms or were otherwise breached. It is accordingly agreed that the parties shall be entitled to an injunction or injunctions to prevent or cure breaches of the provisions of this Warrant and to enforce specifically the terms and provisions hereof, this being in addition to any other remedy to which either of them may be entitled by law or equity.

16.   Assignment.

This Warrant may be transferred or assigned, in whole or in part, at any time and from time to time by the then Holder by submitting this Warrant to the Company together with a duly executed Assignment in substantially the form and substance of the Form of Assignment which accompanies this Warrant as Exhibit B hereto, and, upon the Company’s receipt thereof, and in any event, within five (5) business days thereafter, the Company shall issue a Warrant to the Holder to evidence that portion of this Warrant, if any as shall not have been so transferred or assigned.

[SIGNATURE PAGE FOLLOWS]

8

IN WITNESS WHEREOF, the Company has caused this Warrant to be duly executed, manually or by facsimile, by one of its officers thereunto duly authorized.

	Janus Resources, Inc.
Date: July 12, 2013	By:	/s/ Rhonda B. Rosen
		Name: Rhonda B. Rosen
		Title: President and Chief Executive Officer

 9