Sitagliptin Methyl 3-aMino-4-(2,4,5-trifluorophenyl)butanoate (Z)-Methyl 3-aMino-4-(2,4,5-trifluorophenyl)but-2-enoate rac-Sitagliptin 3-(Trifluoromethyl)-1,2,4-triazolo[4,3-a]pyrazine (R)-Methyl 3-aMino-4-(2,4,5-trifluorophenyl) butanoate .(R)-2-hydroxy-2-phenylacetate (R)-Methyl 3-aMino-4-(2,4,5-trifluorophenyl)butanoate hydrochloride Benzenebutanoicacid,b-aMino-2,4,5-trifluoro-,Methylester,(bR)- 5-1-hydroxy-2-(2,4,5-trifluorophenyl)ethylidene-2,2-dimethyl-1,3-dioxane-4,6-dione 3-Amino-4-(2,4,5-trifluorophenyl)butanoic acid (S)-Sitagliptin Phosphate 3-(Trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazine Sitagliptin Impurity 26 2-Hydrazinopyrazine Methyl 3-Oxo-4-(2,4,5-trifluorophenyl)butanoate 1-(2,4,5-trifluorophenyl)propan-2-amine hydrochloride (R)-1-(2,4,5-trifluorophenyl)propan-2-amine 1-(2,4,5-trifluorophenyl)propan-2-amine