2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-ethyl-1-methyl-5-(1-methylbutyl)- (9CI) 5-24-09-00170 (Beilstein Handbook Reference) 5-Ethyl-1-methyl-5-(1-methylbutyl)barbituric acid 57562-99-9 BARBITURIC ACID, 5-ETHYL-1-METHYL-5-(1-METHYLBUTYL)- BRN 0225599 N-Methylpentobarbital