Synonyms: | tert-butyl (R)-(1-(7-(but-2-yn-1-yl)-3-methyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)piperidin-3-yl)carbamate;Linagliptin Impurity 21;Linagliptin-4;(R)-tert-butyl (1-(7-(but-2-yn-1-yl);3-methyl-7-(2-butyn-1-yl)-8-[(R)-3-(tert-butoxycarbonylamino)piperidin-1-yl]xanthine;Carbamic acid,[(3R)-1-[7-(2-butynyl)-2,3,6,7-tetrahydro-3-methyl-2,6-dioxo-1H-purin-8-yl]-3-piperidinyl]-, 1,1-dimethylethyl ester;Linagliptin impurity 4/Tert-butyl (R)-(1-(7-(but-2-yn-1-yl)-3-methyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)piperidin-3-yl)carbamate;Carbamic acid, [(3R)-1-[7-(2-butynyl)-2,3,6,7-tetrahydro-3-methyl-2,6-dioxo-1H-purin-8-yl]-3-piperidinyl]-, 1,1-dimethylethyl ester (9CI) |