2,4,6(1H,3H,5H)-Pyrimidinetrione, 1,3-dimethyl-5-(1-methylpropyl)- (9CI) 4-24-00-01900 (Beilstein Handbook Reference) 5-sec-Butyl-1,3-dimethylbarbituric acid 7391-63-1 BARBITURIC ACID, 5-sec-BUTYL-1,3-DIMETHYL- BRN 0195760 NSC 128101