(8alpha)-12'-hydroxy-5'alpha-isobutyl-2'-isopropylergotaman-3',6',18-trione alpha-ergocryptinine (8α)-12'-Hydroxy-2'-(1-methylethyl)-5'α-(2-methylpropyl)ergotaman-3',6',18-trione Einecs 208-122-8 Ergotaman-3',6',18-trione, 12'-hydroxy-2'-(1-methylethyl)-5'-(2-methylpropyl)-, (5'alpha,8alpha)- Isoergokryptine (5'α,8α)-12'-Hydroxy-2'-(1-Methylethyl)-5'-(2-Methylpropyl)-ergotaMan-3',6',18-trione α-Ergocryptinine (contains up to 10% Ethyl Acetate)