Alogliptin Impurity 29 Alogliptin Impurity 7 (R)-2-((3-methyl-2,4-dioxo-6-(piperidin-3-ylamino)-3,4-Dihydro- pyrimidin-1(2H)-yl)methyl)benzonitrile hydrogen chloride Alogliptin Related Compound 18 2-[(6-CHLORO-2,4-DIOXO-3,4-DIHYDROPYRIMIDIN-1(2H)-YL)METHYL]BENZONITRILE

Alogliptin Impurity 34 Alogliptin Related Compound 32 Alogliptin Impurity 35 Alogliptin Related Compound 21 Alogliptin Impurity B

(R)-2-((6-(3-((3-(2-cyanobenzyl)-1-Methyl-2,6-dioxo-1,2,3,6-tetrahydropyriMidin-4-yl)aMino)piperidin-1-yl)-3-Methyl-2,4-dioxo-3,4-dihydropyriMidin-1(2H)-yl)Methyl)benzonitrile Alogliptin Impurity 16 Alogliptin Impurity 10 Alogliptin Related Compound 24 2-Cyanobenzyl bromide

NSC45721 Alogliptin Impurity 11 Alogliptin Impurity 19