(-)-Aricine 16,17-Didehydro-10-methoxy-19alpha-methyloxayohimban-16-carboxylic acid 482-91-7 Aricin Aricine Aricine (8CI) Cinchovatin Cinchovatine (VAN) Heterophyllin Heterophylline (VAN) NSC 15624 NSC 72136 Oxayohimban-16-carboxylic acid, 16,17-didehydro-10-methoxy-19-methyl-, methyl ester, (19alpha,20alpha)- (9CI)