Synonyms: 24-Nor-D:A-friedooleana-1(10),3,5,7-tetraen-29-oicacid, 3-hydroxy-2-oxo-, methyl ester (8CI);D:A-Friedo-24-noroleana-1(10),3,5,7-tetraen-29-oic acid, 3-hydroxy-2-oxo-,methyl ester, (20a)-;Pristimerin (7CI); 2-Picenecarboxylic acid,1,2,3,4,4a,5,6,6a,11,12b,13,14,14a,14b-tetradecahydro-10-hydroxy-2,4a,6a,9,12b,14a-hexamethyl-11-oxo-,methyl ester, (2R,4aS,6aS,12bR,14aS,14bR)-; 2-Picenecarboxylic acid,1,2,3,4,4a,5,6,6a,11,12b,13,14,14a,14b-tetradecahydro-10-hydroxy-2,4a,6a,9,12b,14a-hexamethyl-11-oxo-,methyl ester, [2R-(2a,4ab,6ab,12bb,14aa,14bb)]-; Celastrol, methyl ester; NSC 99281