Alogliptin Benzoylamino Impurity Catalogue A164505 M.W 443.50 M.F C25H25N5O3 Specifications FAQs (R)-N-(1-(3-(2-Cyanobenzyl)-1-methyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)piperidin-3-yl)benzamide