ROCKVILLE, Md.--(BUSINESS WIRE)--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, today announced that it has received approval from the U.S. Food & Drug Administration (FDA) to initiate a Phase II clinical trial for its lead oncology compound, Archexin (formerly known as RX-0201), in patients with renal cell carcinoma (RCC). Enrollment is expected to begin in Q3 2007.