Rexahn Pharmaceuticals, Inc. (NYSE American:RNN), a clinical stage biopharmaceutical company developing innovative, targeted therapeutics for the treatment of cancer, today announced that it has entered into a collaboration and license agreement with Zhejiang Haichang Biotechnology Co., Ltd. (Haichang), to develop RX-0201 (Archexin®) for the treatment of hepatocellular carcinoma (HCC), the most common form of liver cancer.