Methyl 3-Oxo-4-(2,4,5-trifluorophenyl)butanoate CAS NO:769195-26-8 Molecular Formula: C₁₁H₉F₃O₃ Appearance: Pale Yellow to Light Yellow Solid Melting Point:41 - 43ºC Molecular Weight:246.18 Usage:Sitagliptin Intermediates