Linagliptin Nitroso Dimer Impurity 2

Chemical Name:  (R)-N-(7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)-N-(1-(7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)piperidin-3-yl)nitrous amide

Synonym: Nitroso impurity of Di LIP-1 AMP

Smile: O=C(N1CC2=NC3=CC=CC=C3C(C)=N2)N(C4=C(C1=O)N(CC#CC)C(N5CCC[C@H](C5)N(C6=NC(N(C(N7CC8=NC9=C(C(C)=N8)C=CC=C9)=O)C)=C(N6CC#CC)C7=O)N=O)=N4)C