Linagliptin Impurity 9 Catalogue L562359 M.W 634.68 M.F C31H38N8O7 Specifications FAQs 7-(But-2-ynyl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-8-(3-(3,4,5,6-tetrahydroxy-2-oxohexylamino)piperidin-1-yl)-1H-purine-2,6(3H,7H)-dione
