(R)-Ethyl 3-amino-4-(2,4,5-trifluorophenyl)butanoate (Sitagliptin Impuruity)，97%

(R)-Ethyl 3-amino-4-(2,4,5-trifluorophenyl)butanoate (Sitagliptin Impuruity)

仅供研发或工业应用，不可直接用于食品、药品、临床诊断或治疗。