Sepracor (SEPR) is a specialty pharmaceutical company focusing on intellectual properties based on the purification of isomers and their metabolites. They are marketing several of these compounds with major pharmaceutical companies. Sepracor markets a drug Lunesta for sleep directly to doctors and markets Xoponex and related allergy and asthma drugs. (www.sunovian.com) Sepracor was acquired by Dainippon Sumitomo Pharma Co., Ltd.in October, 2009.