| Synonyms: | Linagliptin MethyldiMer;8-[(3R)-3-aminopiperidin-1-yl]-1-[[4-[[2-[[8-[(3R)-3-aminopiperidin-1-yl]-7-but-2-ynyl-3-methyl-2,6-dioxopurin-1-yl]methyl]quinazolin-4-yl]methyl]-4-methyl-1H-quinazolin-2-yl]methyl]-7-but-2-ynyl-3-methylpurine-2,6-dione;8-[(3R)-3-Amino-1-piperidinyl]-1-[[4-[[2-[[8-[(3R)-3-amino-1-piperidinyl]-7-(2-butyn-1-yl)-2,3,6,7-tetrahydro-3-methyl-2,6-dioxo-1H-purin-1-yl]methyl]-1,4-dihydro-4-methyl-4-quinazolinyl]methyl]-2-qui;Linagliptin Impurity T(Linagliptin Methyldimer);Linagliptin Methyldimer (~90%);8-((R)-3-aminopiperidin-1-yl)-1-((4-((2-((8-((R)-3-aminopiperidin-1-yl)- 7-(but-2-yn-1-yl)-3-methyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-p;Linagliptin Dimer Imputiry 2;1H-Purine-2,6-dione, 8-[(3R)-3-amino-1-piperidinyl]-1-[[4-[[2-[[8-[(3R)-3-amino-1-piperidinyl]-7-(2-butyn-1-yl)-2,3,6,7-tetrahydro-3-methyl-2,6-dioxo-1H-purin-1-yl]methyl]-1,4-dihydro-4-methyl-4-quinazolinyl]methyl]-2-quinazolinyl]methyl]-7-(2-butyn-1-yl)-3,7-dihydro-3-methyl- |