Exhibit 24
POWER OF ATTORNEY
 
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Tae Heum Jeong, a true and lawful attorney-in-fact and agent, with full power to him (including the full power of substitution and resubstitution), to sign for him or her and in his or her name, place and stead, in the capacity or capacities set forth below, (1) the Annual Report on Form 10-KSB for the fiscal year ended December 31, 2006 to be filed by Rexahn Pharmaceuticals, Inc. (the "Company") with the Securities and Exchange Commission (the "Commission") pursuant to Section 13 of the Securities Exchange Act of 1934, as amended, and (2) any amendments to the foregoing Annual Report, and to file the same, with all exhibits thereto and other documents in connection therewith, with the Commission, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.
 

Signature
Title
Date
/s/ Chang H. Ahn
Chang H. Ahn
Chairman and Chief Executive Officer
March 29, 2007
/s/ Tae Heum Jeong
   Tae Heum Jeong
Chief Financial Officer, Secretary and Director
March 28, 2007
/s/ Young Soon Park
   Young-Soon Park
Director
March 29, 2007
/s/David McIntosh
   David McIntosh
Director
March 28, 2007
/s/ Charles Beever
   Charles Beever
Director
March 30, 2007
/s/ Kwang Soo Cheong
   Kwang Soo Cheong
Director
March 29, 2007
/s/ Y. Michele Kang
   Y. Michele Kang
Director
March 30, 2007