1,3-Dimethyl-5-ethyl-5-phenylbarbituric acid 1,3-Dimethylphenobarbital 1,3-Dimethylphenobarbitone 2,4,6(1H,3H,5H)-Pyrimidinetrione, 1,3-dimethyl-5-ethyl-5-phenyl- (9CI) 5-24-09-00297 (Beilstein Handbook Reference) 730-66-5 BARBITURIC ACID, 1,3-DIMETHYL-5-ETHYL-5-PHENYL- BRN 0268343 Dimethylphenobarbital N,N'-Dimethylphenobarbital