7-(2-Butyn-1-yl)-8-(dimethylamino)-3,7-dihydro-3-methyl-1-[(4-methyl-2-quinazolinyl)methyl]-1H-purine-2,6-dione; Dimethylamino Linagliptin Impurity
7-(2-Butyn-1-yl)-8-(dimethylamino)-3,7-dihydro-3-methyl-1-[(4-methyl-2-quinazolinyl)methyl]-1H-purine-2,6-dione; Dimethylamino Linagliptin Impurity