Chinesename:5-[1-Hydroxy-2-(2，4，5-trifluorophenyl)ethylene]-2，2-dimethyl-1，3-dioxane-4，6-diketone

　　Englishname:5-1-hydroxy-2-(2，4，5-trifluorophenyl)ethylidene-2，2-dimethyl-1，3-dioxane-4，6-dione

　　CASnumber:764667-64-3

　　Molecularformula:C14H11F3O5

　　Molecularweight:316.23

　　Purity:99%

　　Appearance:whitecrystals

　　Application:intermediateofsitagliptin，treatmentofdiabetes