
Sitagliptin Acid Methyl Ester HCl ;
Sitagliptin STA Impurity H (HCl) ;
(R)-Methyl 3-amino-4-(2,4,5-trifluorophenyl)butanoate HCl ;
CAS # 881995-69-3 (Base) ; 1374985-05-3 (HCl) ;
C11H12F3NO2 (Base) ; Mol. Wt.: 247.21 ;
C11H13ClF3NO2 (HCl) ; Mol. Wt.: 283.67 ;