EXHIBIT 32.1

Certification of Principal Executive Officer

Pursuant to 18 U.S.C. Section 1350

As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

I, Carl Spana, President and Chief Executive Officer of Palatin Technologies, Inc., hereby certify, to my knowledge, that the Annual Report on Form 10-K for the year ended June 30, 2011 of Palatin Technologies, Inc. (the “Form 10-K”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and the information contained in the Form 10-K fairly presents, in all material respects, the financial condition and results of operations of Palatin Technologies, Inc.

Dated: September 21, 2011

/s/ Carl Spana

Carl Spana, President and Chief Executive Officer

(Principal Executive Officer)