483-10-3 COYNANTHINE Corynanthin Corynanthine NSC407306 Rauhimbin Rauhimbine Yohimban-16-carboxylic acid, 17-hydroxy-, methyl ester, (16.beta.,17.alpha.)- Yohimban-16.beta.-carboxylic acid, 17.alpha.-hydroxy-, methyl ester