1-Benzyl-5-ethyl-5-isoamyl barbituric acid 1-Benzyl-5-ethyl-5-isopentyl barbituric acid 5-24-09-00176 (Beilstein Handbook Reference) 73680-98-5 BARBITURIC ACID, 1-BENZYL-5-ETHYL-5-ISOPENTYL- BRN 0309907