Linagliptin N-Acetyl Impurity Catalogue L562373 CAS 1803079-49-3 M.W 514.58 M.F C27H30N8O3 Specifications FAQs Linagliptin Acetamide ; 8-[(3R)-3-Acetylamino-1-piperidinyl]-7-(2-butyn-1-yl)-3,7-dihydro-3-methyl-1-[(4-methyl-2-quinazolinyl)methyl]-1H-purine-2,6-dione