| Synonyms: | Sitagliptin Defuoro IMpurity 5;Sitagliptin-5;Sitagliptin impurity 39/(R)-3-amino-4-(2,5-difluorophenyl)-1-(3-(trifluoromethyl)-5,6- dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)butan-1-one;(R)-3-amino-4-(2,5-difluorophenyl);Sitagliptin Defuoro IMpurity 1;Sitagliptin impurity SKY-III;1-Butanone, 3-amino-4-(2,5-difluorophenyl)-1-[5,6-dihydro-3-(trifluoromethyl)-1,2,4-triazolo[4,3-a]pyrazin-7(8H)-yl]-, (3R)-;(R)-3-amino-4-(2,5-difluorophenyl)-N-methyl-N-((4-methyl-5-(trifluoromethyl)-4H-1,2,4-triazol-3-yl)methyl)butanamide |