熊去氧胆酸，主要成分是3a,7β- 二羟基-5β- 胆甾烷-24-酸，为有机化合物，无臭，味苦。本品在乙醇中易溶，在氯仿中不溶；在冰醋酸中易溶，在氢氧化钠试液中溶解。医学上用于增加胆汁酸分泌，并使胆汁成分改变，降低胆汁中胆固醇及胆固醇脂，有利于胆结石中的胆固醇逐渐溶解。阴离子去垢剂，用于生化研究。 Ursodeoxycholic acid is a bile acid with significant colon chemopreventive activity. Ursodeoxycholic acid (UDCS) is a cell protectant used extensively to mitigate hepatic and biliary diseases. Ursodeoxycholic acid may be used to study its specific activities that range from reduction of cholesterol absorpition, cholesterol gallstone dissolution to suppression of immune response.