EXHIBIT 32.1

CERTIFICATION OF

CHIEF EXECUTIVE OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350

I, Chang H. Ahn, Chief Executive Officer of Rexahn Pharmaceuticals, Inc. (the "Company"), certify, pursuant to 18 U.S.C. Section 1350, as adopted by Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)	the Quarterly Report on Form 10-QSB of the Company for the quarter ended June 30, 2005 as filed on the date hereof with the Securities and Exchange Commission (the "Report") fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)	the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: August 23, 2005

/s/ Chang H. Ahn

Chang H. Ahn

Chief Executive Officer