22-((2-Methyl-1-oxo-2-butenyl)oxy)-3-oxo-olean-12-en-28-oic acid, (22beta) 22-((2-Methyl-1-oxo-2-butenyl)oxy)-3-oxo-olean-12-en-28-oic acid, 22-beta(Z)- 22-beta-Angeloyloxyoleanolic acid 467-81-2 HSDB 3503 Lantadene A Olean-12-en-28-oic acid, 22-((2-methyl-1-oxo-2-butenyl)oxy)-3-oxo-, (22beta(Z))- Olean-12-en-28-oic acid, 22-beta-hydroxy-3-oxo-, 2-methylcrotonate, (Z)- Olean-12-en-28-oic acid, 22beta-hydroxy-3-oxo-, 2-methylcrotonate, (Z)- Rehmannic acid