Linagliptin Impurity 10 (S-Isomer)

Chemical Name: (S)-8-(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 ; (S)-8-(3-aminopiperidin-1-yl)-7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl) methyl)-1H-purine-2,6(3H,7H)-dione

Synonym: 8-[(3S)-3-Amino-1- piperidinyl]-7-(2-butyn-1- yl)-3,7-dihydro-3-methyl-1- [(4-methyl-2- quinazolinyl)methyl]-1H- purine-2,6-dione

Smile: O=C(N(C)C(N=C(N1CCC[C@H](N)C1)N2CC#CC)=C2C3=O)N3CC4=NC5=CC=CC=C5C(C)=N4