英文别名(R)-β-Amino-2,4,5-trifluoro-benzenebutanoic acid HCl; Sitagliptin Impurity 17; Sitagliptin Acid Impurity HCl; Sitagliptin-2; (3R)-3-amino-4-(2,4,5-trifluorophenyl)butanoic acid hydrochloride; (R)-3-amino-4-(2,4,5-trifluorophenyl)butanoic acid hydrochloride