5.beta.-Cholan-24-oic acid 5.beta.-Cholanic acid 5.beta.-Cholanoic acid 546-18-9 Androstane-17-butanoic acid, .gamma.-methyl-, (5.beta.,17.beta.)- Cholan-24-oic acid, (5.beta.)- Cholanoic acid L 596205-0 NSC18161 Ursocholanic acid