英文别名Sitagliptin Impurity 1; Sitagliptin Impurity 7; Sitagliptin S-Isomer; (S)-Sitagliptin; (3S)-3-Amino-1-[5,6-dihydro-3-(trifluoromethyl)-1,2,4-triazolo[4,3-a]pyrazin-7(8H)-yl]-4-(2,4,5-trifluorophenyl)-1-butanone; Sitagliptin impurity SKY-8-ISO; Sitagliptin EP Impurity A(Free base) 
