ROCKVILLE, Md.--(BUSINESS WIRE)--Rexahn Pharmaceuticals, Inc. (NYSE Amex: RNN), a clinical stage pharmaceutical company commercializing potential best in class oncology and CNS therapeutics, today announced it has received commitments from certain institutional investors to purchase an aggregate of $10 million of Rexahn’s securities in a registered direct offering. Rexahn expects to receive net proceeds of approximately $9.45 million after deducting placement agent fees and other offering expenses.