Tofacitinib Related Substance 4

Chemical Name: 3-((3R,4R)-3-(((5R,6S)-2-hydroxy-5,6-dimethyl-6,7-dihydro-5H-pyrrolo[2,3-d]pyrimidin-4-yl)(methyl)amino)-4-methylpiperidin-1-yl)-3-oxopropanenitrile

Smile: OC1=NC2=C([C@@H](C)[C@H](C)N2)C(N(C)[C@H]3CN(C(CC#N)=O)CC[C@H]3C)=N1