Alliance Pharmaceutical Corp., together with its subsidiaries, identifies, designs, and develops novel medical products in the United States. It focuses on developing Oxygent, an intravascular oxygen carrier, which is designed to augment oxygen delivery in surgical patients. The company has collaborative relationships with Beijing Double-Crane Pharmaceutical Co., Ltd., LEO Pharma A/S, and Il Yang Pharm. Co., Ltd. Alliance Pharmaceutical Corp. was formerly known as Otisville BioPharm, Inc. and changed its name to Alliance Pharmaceutical Corp. in February 1989. The company was incorporated in 1983 and is based in San Diego, California.