英文别名Benzenebutanoic acid, 2,4,5-trifluoro-b-oxo-, ethyl ester; Benzenebutanoic acid, 2,4,5-trifluoro-β-oxo-, ethyl ester; Sitagliptin Impurity 124; 2,4,5-trifluorophenyl ethyl acetoacetate; ethyl 3-oxo-4-(2,4,5-trifluoro-phenyl)-butyrate; 3-oxo-4-(2,4,5-trifluoro-phenyl)-butyric acid ethyl ester; 3-oxo-4-(2,4,5-trifluorophenyl)butyric acid ethyl ester; ethyl 4-(2,4,5-trifluorophenyl)-acetoacetate 
