Tofacitinib Impurity 51

Ethyl 2-cyano-3-imino-5- ((3R,4R) -4-methyl-3- (methyl (7H-pyrrolo[2,3-d]pyrimidin-4-yl) amino) piperidin-1-yl) -5-oxopentanoate

C21H27N7O3

425.49

Tofacitinib

Ethyl 2-cyano-3-imino-5- ((3R,4R) -4-methyl-3- (methyl (7H-pyrrolo[2,3-d]pyrimidin-4-yl) amino) piperidin-1-yl) -5-oxopentanoate