Linagliptin Impurity 36

Chemical Name: N,N’-bis((R)-1-(7-(but-2-yn-1-yl)-3-methyl-1-((4-methylquinazolin-2-yl)methyl)-2,6-dioxo-2,3,6,7-tetrahydro-1Hpurin-8-yl)piperidin-3-yl)phthalamide

Smile: O=C(N[C@H]1CN(C(N2CC#CC)=NC(N(C)C(N3CC4=NC(C)=C5C=CC=CC5=N4)=O)=C2C3=O)CCC1)C6=CC=CC=C6C(N[C@H]7CN(C(N8CC#CC)=NC(N(C)C(N9CC%10=NC(C)=C%11C=CC=CC%11=N%10)=O)=C8C9=O)CCC7)=O