3beta,20alpha-Yohimban-16beta-carboxylic acid, 18beta-hydroxy-11,17alpha-dimethoxy- (8CI) 83-60-3 NSC 81463 Reserpic acid Reserpinolic acid Yohimban-16-carboxylic acid, 18-hydroxy-11,17-dimethoxy-, (3beta,16beta,17alpha,18beta,20alpha)- (9CI)