IP5PMS7GWY;BDBM50210665;Sitagliptin phosphate impurity C [EP];5-Desfluoro Sitagliptin; Sitagliptin EP Impurity C;(3R)-3-Amino-4-(2,4-difluorophenyl)-1-(3-(trifluoromethyl)-5,6-dihydro(1,2,4)triazolo(4,3-a)pyrazin-7(8H)-yl)butan-1-one;(3R)-3-Amino-4-(2,4-difluorophenyl)-1-(5,6-dihydro-3-(trifluoromethyl)-1,2,4-triazolo(4,3-a)pyrazin-7(8H)-yl)-1-butanone;(R)-3-amino-4-(2,4-difluorophenyl)-1-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4;(R)-3-Amino-4-(2,4-difluorophenyl)-1-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-