Release issued 13th May 2008

Rockville, MD, May 13, 2008 -- Rexahn Pharmaceuticals, Inc. (OTC BB: RXHN), a biopharmaceutical company dedicated to the discovery, development, and commercialization of innovative treatments for cancer, central nervous system disorders, sexual dysfunction and other unmet medical needs, announced that the company will be presenting at the Rodman & Renshaw 5th Annual Global Healthcare Conference to be held May 19-20, 2008 at the Le Meridien Beach Plaza Hotel in Monte Carlo, Monaco. The company¡¯s Chairman and Chief Executive Officer, Dr. Chang H. Ahn, is scheduled to present an overview of Rexahn Pharmaceuticals on Tuesday, May 20, 2008 at 9:00am CEST in the Atlantique Salon, Meridional.

The full conference schedule can be found on www.rodmanrenshaw.com/eu08conference

(25th February 2008) Rexahn Awarded Maryland Industrial Partnerships Grant to Develop Polymer-drug Conjugates for Cancer Therapy

(3rd January 2008) Rexahn Pharmaceuticals Raises $8.6 Million in Private Placement