曲格列汀杂质  Trelagliptin impurity

QGT-G  (S)-2-((6-(3-aminopiperidin-1-yl)-3methyl-2,4-dioxo-3,4-dihydropyrimidin1(2H)-yl)methyl)-4-fluorobenzonitrile  
QGT-I (R)-2-((6-(3-((3-(2-cyano-5fluorobenzyl)-1-methyl-2,6-dioxo1,2,3,6-tetrahydropyrimidin-4yl)amino)piperidin-1-yl)-3-methyl-2,4dioxo-3,4-dihydropyrimidin-1(2H)yl)methyl)-4-fluorobenzonitrile  1917324-13-0
QGT-M   (R)-4-fluoro-2-((3-methyl-6-(3-((1methyl-2,6-dioxo-1,2,3,6tetrahydropyrimidin-4yl)amino)piperidin-1-yl)-2,4-dioxo-3,4dihydropyrimidin-1(2H)yl)methyl)benzonitrile

QGT-N  (R)-2-(((1-(3-(2-cyano-5-fluorobenzyl)1-methyl-2,6-dioxo-1,2,3,6tetrahydropyrimidin-4-yl)piperidin-3yl)amino)methyl)-4-fluorobenzonitrile
QGT-O  N1,N4-bis((R)-1-(3-(2-cyano-5fluorobenzyl)-1-methyl-2,6-dioxo1,2,3,6-tetrahydropyrimidin-4yl)piperidin-3-yl)succinamide  087874-94-8  

QGT-P  (R)-4-fluoro-2-((3-methyl-2,4-dioxo-6(piperidin-3-ylamino)-3,4dihydropyrimidin-1(2H)yl)methyl)benzonitrile  1812193-01-3

QGT-Q  (R)-2-((6-(3-aminopiperidin-1-yl)-2,4dioxo-3,4-dihydropyrimidin-1(2H)yl)methyl)-4-fluorobenzonitrile

QGT-R  (R)-2-((6-(3-aminopiperidin-1-yl)-3methyl-2,4-dioxo-3,4-dihydropyrimidin1(2H)-yl)methyl)-4-fluorobenzamide  1938080-44-4

QGT-S  (R)-2-((6-(3-aminopiperidin-1-yl)-3methyl-2,4-dioxo-3,4-dihydropyrimidin1(2H)-yl)methyl)-4-fluorobenzoic acid  1917324-15-2

QGT-T  (R)-2-((6-(3-aminopiperidin-1-yl)-3methyl-2,4-dioxo-3,4-dihydropyrimidin1(2H)-yl)methyl)benzonitrile  850649-61-5