Linagliptin 8-[(3R)-3-Amino-1-piperidinyl]-7-(2-butynyl)-3, 7-dihydro-3-methyl-1-[(4-methyl-2-quinazolinyl)methyl]-1H-purine-2, 6-dione; 8-[(3R)-3-aminopiperidin-1-yl]-7-(but-2-yn-1-yl)-3-methyl-1-[(4-methylquinazolin-2-yl)methyl]-3, 7-dihydro-1H-purine-2, 6-dione; 1h-purine-2, 6-dione, 8-[(3r)-3-amino-1-piperidinyl]-7-(2-butyn-1-yl)-3, 7-dihydro-3-methyl-1-[(4-methyl-2-quinazolinyl)methyl]- CAS NO.: 668270-12-0 MF: C25H28N8O2 MW: 472.54 We supply Pharmaceutical intermediates , diabetes drug, etc with high quality and competitive price. Hope to cooperate with you! pls contact with nora dot z dot sihuan at foxmail dot com