... Ursodeoxycholic Acid (Abbr: Ursodiol or UDCA, CAS 128-13-2). Used to treat primary biliary cirrhosis. Ursodeoxycholic ... 10S,13R,14S,17R)-3,7-dihydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)pentanoic acidSynonyms: ursodeoxycholic acid ... , Actigall, Ursosan, Urso, Urso ForteIdentifiers CAS number: 128-13-2 ...