Tofacitinib Impurity 9

Chemical Name: (Z)-2-((3R,4R)-3-((1H-indol-4-yl)(methyl)amino)-4-methylpiperidine-1-carbonyl)-3-amino-5-((3R,4R)-4-methyl-3-(methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)piperidin-1-yl)-5-oxopent-2-enenitrile