Synonyms: BI 1356;BI 1356BS;Linagliptin;ONDERO;1H-Purine-2,6-dione,8-[(3R)-3-amino-1-piperidinyl]-7-(2-butynyl)-3,7-dihydro-3-methyl-1-[(4-methyl-2-quinazolinyl)methyl]-(9CI);1H-Purine-2,6-dione, 8-((3R)-3-amino-1-piperidinyl)-7-(2-butynyl)-3,7-dihydro-3-methyl-1-((4-methyl-2-quinazolinyl)methyl)-;(R)-8-(3-Amino-piperidin-1-yl)-7-but-2-ynyl-3-methyl-1-(4-methyl-quinazolin-2-ylmethyl)-3,7-dihydro-purine-2,6-dione;Linagliptin;Tradjenta;