Synonyms: Alpha Yohimbine;methyl (16beta,20alpha)-17-hydroxyyohimban-16-carboxylate;methyl (16beta,17alpha,20alpha)-17-hydroxyyohimban-16-carboxylate hydrochloride (1:1);methyl (16beta,17alpha,20alpha)-17-hydroxyyohimban-16-carboxylate;methyl (17alpha,20alpha)-17-hydroxyyohimban-16-carboxylate hydrochloride;(16beta,17alpha,20alpha)-17-hydroxy-16-(methoxycarbonyl)yohimban-4-ium