英文别名Sitagliptin Impurity 51; Benzenebutanoic acid, β-amino-2,4,5-trifluoro-, methyl ester, (βR)-, hydrochloride (1:1); Methyl (3R)-3-amino-4-(2,4,5-trifluorophenyl)butanoate hydrochloride (1:1); (3R)-3-amino-4-(2,4,5-trifluorophenyl)-butyric acid methyl ester hydrochloride; (R)-Sitagliptin Methyl-Ester Impurity HCl; Sitagliptin Impurity 40 HCl; Methyl (R)-b-Amino-2,4,5-trifluoro-benzenebutanoate HCl; Benzenebutanoic acid, β-amino-2,4,5-trifluoro-, methyl ester, (βR)-; Sitagliptin Methyl-Ester Impurity HCl; methyl (3R)-3-amino-4-(2,4,5-trifluorophenyl)butanoate hydrochloride; Methyl (R)-b-Amino-2,4,5-trifluorobenzenebutanoate HCl; Methyl (R)-beta-Amino-2,4,5-F3-benzenebutanoate HCl; (R)-Methyl3-amino-4-(2,4,5-trifluorophenyl)butanoatehydrochloride; Methyl (R)-b-Amino-2,4,5-trifluorobenzenebutanoate hydrochloride; (3R)-Methyl 3-amino-4-(2,4,5-trifluorophenyl)butanoate hydrochloride; Benzenebutanoic acid, beta-amino-2,4,5-trifluoro-, methyl ester, hydrochloride (1:1), (betaR)- 
