ROCKVILLE, Md.--(BUSINESS WIRE)--Rexahn Pharmaceuticals, Inc. (NYSE Amex: RNN), a clinical stage pharmaceutical company commercializing potential best in class oncology and central nervous system (CNS) therapeutics, today announced the results of an animal study that further demonstrates the company’s Phase II oncology drug, Archexin™, as having the potential to target and treat multiple life-threatening cancers.