... -oxo-4-(2,4,5-trifluorophenyl)butyl)-5,6,7,8-tetrahydor-3-(trifluoromethyl)-; Sitagliptin Intermediate; ... (2R)-4-oxo-4-[3-(trifluoromethyl)-5,6-dihydro[1,2,4]triazolo[4,3-a] ... oneMolecular FormulaC16H15F6N5OMolecular Weight407.3136InChIInChI=1/C16H15F6N5O/c17-10-6-12(19)11(18)4-8(10) ... 905°C at 760 mmHgRefractive index1.59Flash point274.277°CVapour Pressur0mmHg at 25°C Sitagliptin , CAS:486460-32-6, ...