英文别名Ursodeoxycholic Acid Impurity 27; Cholan-24-oic acid, 3,7-dihydroxy-, ethyl ester, (3α,5β,7β)-; Urosodeoxycholic Acid Impurity 20; Ethyl 4-((3R,5S,7R,10S,13R,17R)-3,7-dihydroxy-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)pentanoate; Ursodeoxycholic Acid Impurity 4 
