Synonyms: 17-Nor-8b,13b-kauran-18-oic acid, 13-methyl-16-oxo- (7CI,8CI);Isosteviol (6CI); (-)-Isosteviol; 1H-2,10a-Ethanophenanthrene-8-carboxylicacid, dodecahydro-2,4b,8-trimethyl-12-oxo-, (2S,4aR,4bS,8R,8aS,10aR)-;Ketoisostevic acid; NSC 231875; iso-Steviol