3,4-Dihydro-5-(ethoxycarbonyl)-4-(4-fluorophenyl)-6-methylpyrimidin-2(1H)-oneEthyl 4-(4-fluorophenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylateEthyl 4-(4-fluorophenyl)-6-methyl-2-(1H,3H)-pyrimidone-5-carboxylateEthyl 4-(4-fluorophenyl)-1,2,3,4-tetrahydro-6-methyl-2-oxo-5-pyrimidinecarboxylate4-(4-氟苯基)-1,2,3,4-四氢-6-甲基-2-氧代-5-嘧啶羧酸乙酯4-(4-氟苯基)-6-甲基-2-(1H,3H)-嘧啶酮-5-羧酸乙酯