5-Pyrimidinecarboxylic acid, 4-butoxy-5-fluorohexahydro-2,6-dioxo-, ethyl ester 5-Pyrimidinecarboxylic acid, 4-butoxy-5-fluorohexahydro-2,6-dioxo-, ethyl ester, cis-(+-)- 65906-75-4 Ethyl t-butoxy-5-fluoro-hexahydro-2,4-dioxopyrimidine-5-carboxylate NSC 375520 Tac 278 Tac-278