ROCKVILLE, Md.--(BUSINESS WIRE)--Rexahn Pharmaceuticals, Inc. (NYSE Amex: RNN), a clinical stage pharmaceutical company dedicated to developing and commercializing first-in-class oncology therapeutics, today announced that it has been issued a United States patent (No. 8,314,100), titled “1-[6,7-substituted alkoxyquinoxalinyl) aminocarbonyl]-4-(hetero) arylpiperazine derivatives.” This new patent covers Rexahn’s quinoxalinyl-piperazine compounds, the process for the preparation of such compounds and their pharmaceutical composition. The patent includes Rexahn’s RX-5902, a first-in-class p68 helicase inhibitor, that is an orally available new chemical entity exhibiting potent antitumor properties in several types of tumors. RX-5902 has also shown to possess strong anti-proliferative activity against known anti-cancer drug-resistant cancer cells, and a synergistic effect with known anti-cancer drugs.
