英文别名Sitagliptin Impurity; Sitagliptin impurity 38; (E)-1-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)-4-(2,4,5-trifluorophenyl)but-3-en-1-one; Impurity FP-C; Sitagliptin Styrylacetyl Analog Impurity; Sitagliptin Styrylacetyl Analog; Sitagliptin Impurity FP-C; 1-[5,6-Dihydro-3-(trifluoromethyl)-1,2,4-triazolo[4,3-a]pyrazin-7(8H)-yl]-4-(2,4,5-trifluorophenyl)-3-buten-1-one; 3-Buten-1-one, 1-[5,6-dihydro-3-(trifluoromethyl)-1,2,4-triazolo[4,3-a]pyrazin-7(8H)-yl]-4-(2,4,5-trifluorophenyl)-; Sitagliptin Impurity 68(Mixture of Z and E Isomers); Sitagliptin Impurity 14 
