英文别名Sitagliptin Impurity 97; Benzenebutanoic acid, β-amino-2,4,5-trifluoro-, ethyl ester, (βR)-; Sitagliptin Impurity 14 Hydrochloride; (R)-Ethyl 2,4,5-trifluoro-b-homophenylalaninate hydrochloride; (R)-Ethyl 3-amino-4-(2,4,5-trifluorophenyl)butanoate; ethyl (3R)-3-amino-4-(2,4,5-trifluorophenyl)butanoate; (R)-Ethyl 2,4,5-trifluoro-b-homophenylalaninate HCl 
