Synonyms: 5-ethyl-5-(3-oxobutyl)pyrimidine-2,4,6(1h,3h,5h)-trione;3'-Ketobutobarbitone;AC1Q6GD1;AC1L4V18;AR-1G8084;5-ethyl-5-(3-oxobutyl)-1,3-diazinane-2,4,6-trione;5-Ethyl-5-(3-oxobutyl)-hexahydropyrimidin-2,4,6-trione;5-Ethyl-5-(3-oxobutyl)-2,4,6(1H,3H,5H)-pyrimidinetrione