Synonyms:
boc-(r)-3-amino-4-(2,4,5-trifluorophenyl)butanoic acid ; sitagliptin intermediate ; (r)-boc-3-amino-4-(2,4,5-trifluorophenyl)butanoicacid ; (r)-sitagliptin n-boc-acid impurity ; (r)-n-boc-3-amino-4-(2,4,5-trifluorophenyl)butanoic  ; boc-(r)-3-amino-4-(2,4,5-trifluoro-phenyl)-butyric acid ; sitagliptin intermediate 1 ; sitagliptin intermediateb ; (r)-n-boc-3-amino-4-(2,4,5-trifluorophenyl)butanoic acid ; parecoxib sodium api