131-03-3 17-alpha-Hydroxy-20-alpha-yohimban-16-beta-carboxylic acid methyl ester 20-alpha-Yohimban-16-beta-carboxylic acid, 17-alpha-hydroxy-, methyl ester Corynanthidine EINECS 205-006-9 Isoyohimbine Mesoyohimbine Methyl (16beta,17alpha,20alpha)-17-hydroxyyohimban-16-carboxylate Rauwolscine Yohimban-16-carboxylic acid, 17-hydroxy-, methyl ester, (16-beta,17-alpha,20-alpha)- (9CI) alpha-Yohimbine