United Therapeutics Corporation, a biotechnology company, engages in the development and commercialization of therapeutic products for patients with chronic and life-threatening diseases in the United States and internationally. It offers Remodulin, Tyvaso, and Adcirca for the treatment of pulmonary arterial hypertension (PAH). The company also develops Oral Treprostinil (UT-15C), a new drug application filed with the United States Food and Drug Administration for the treatment of PAH. Its development products under Phase III clinical trials include Oral Treprostinil (UT-15C) Combination Therapy for PAH; Ch14.18 monoclonal antibody (MAb) targeting Neuroblastoma; and Remodulin for the treatment of PAH in the United States, the United Kingdom, France, Germany, Italy, and Japan. The companyís development products under Phase I clinical trials comprise Beraprost-MR for PAH in North America, Europe, Mexico, South America, Egypt, India, South Africa, and Australia; 8H9 MAb targeting Metastatic brain cancer; and IW001 for the treatment of Idiopathic pulmonary fibrosis and primary graft dysfunction. Its pre-clinical stage products consist of Glycobiology Antiviral Agents for viral infectious diseases; PLacental eXpanded cells targeting PAH; and pulmonary tissue replacement and remodeling products for the treatment of end-stage lung disease. The company serves pharmaceutical wholesalers through specialty pharmaceutical distributors and other distributors. United Therapeutics Corporation was founded in 1996 and is headquartered in Silver Spring, Maryland.