Molecular Formula: C16H15F6N5O.H3PO4 Formula Weight: 505.31
7-[(3R)-3-amino-1-oxo-4-(2,4,5-trifluorophenyl)butyl]-5,6,7,8-tetrahydro-3-(trifluoromethyl)-1,2,4-triazolo[4,3-a]pyrazine phosphate;MK-0431;Sitagliptin phosphate monohydrate