Synonyms: Icterogenin;AC1O5V05;LS-194022;Olean-12-en-28-oic acid, 22beta,24-dihydroxy-3-oxo-, 22-(2-methylcrotonate), (Z)-;(4R,4aS,6aR,6aS,6bR,9S,12aR,14bR)-9-(hydroxymethyl)-2,2,6a,6b,9,12a-hexamethyl-4-[(E)-2-methylbut-2-enoyl]oxy-10-oxo-3,4,5,6,6a,7,8,8a,11,12,13,14b-dodecahydro-1H-picene-4a-carboxylic acid;17660-28-5;18530-66-0;22728-83-2;23-Hydroxy-22beta(Z)-((2-methyl-1-oxo-2-butenyl)oxy)-3-oxo-4beta-olean-12-en-28-oic acid;561-47-7;Crotonic acid, 2-methyl-, 22-ester with 22beta,24-dihydroxy-3-oxoolean-12-en-28-oic acid, (Z)-;Olean-12-en-28-oic acid, 23-hydroxy-22-(((2Z)-2-methyl-1-oxo-2-butenyl)oxy)-3-oxo-, (4beta,22beta)-