1(2H)-Pyrimidineacetic acid, 5-ethyltetrahydro-3-methyl-2,4,6-trioxo-5-phenyl-, ethyl ester 1-Methyl-carbetoxymethyl-phenobarbital 70959-41-0 Ethyl 5-ethyltetrahydro-3-methyl-2,4,6-trioxo-5-phenyl-1(2H)-pyrimidineacetate Hexahydro-5-ethyl-3-methyl-5-phenyl-2,4,6-trioxo-1-pyrimidineacetic acid ethyl ester