4-27-00-07926 (Beilstein Handbook Reference) 6474-90-4 Alstonine, 3,4,5,6-tetrahydro- Alstonine, 3,4,5,6-tetrahydro- (8CI) Alstonine, 3,4,5,6-tetrahydro-, (3alpha)- Alstonine, tetrahydro- BRN 0097270 EINECS 229-331-0 Methyl (19alpha,20alpha)-16,17-didehydro-19-methyloxayohimban-16-carboxylate NSC 72115 Oxayohimban-16-carboxylic acid, 16,17-didehydro-19-methyl-, methyl ester, (19-alpha,20-alpha)- Tetrahydroalstonine