Obeticholic Acid Impurity E Catalogue A278325 CAS 915038-25-4 M.W 418.61 M.F C26H42O4 Specifications FAQs Synonyms:(R)-4-((3R,5S,6S,8S,9S,10S,13R,14S,17R)-6-ethyl-3-hydroxy-10,13-dimethyl-7-oxohexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)pentanoic acid