Form: 10QSB

Optional form for quarterly and transition reports of small business issuers

May 23, 2005

EXHIBIT 32.1

Published on May 23, 2005

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 March 31, 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: May 23, 2005


/s/ Chang H. Ahn
- -------------------------
Chang H. Ahn
Chief Executive Officer