Sitagliptin486460-32-6100 % similar Sitagliptin phosphate654671-78-087 % similar Sitagliptin phosphate monohydrate654671-77-983 % similar 1-(3-(Trifluoromethyl)-5,6-dihydro(1,2,4)triazolo(4,3-a)pyrazin-7(8H)-yl)-4-(2,4,5-trifluorophenyl)butane-1,3-dione764667-65-468 % similar Sitagliptin deamino impurity 11253056-18-661 % similar Sitagliptin enamine767340-03-460 % similar Sitagliptin triazecine analog2088771-61-143 % similar 3-(Trifluoromethyl)-5,6,7,8-tetrahydro-(1,2,4)triazolo(4,3-a)pyrazine486460-21-332 % similar 3-(Trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazine hydrochloride762240-92-631 % similar