Tofacitinib Impurity 224

1,4-bis ((3R,4R) -4-methyl-3- (methyl (7H-pyrrolo[2,3-d]pyrimidin-4-yl) amino) piperidin-1-yl) butane-1,4-dione

C30H40N10O2

572.72

Tofacitinib

1,4-bis ((3R,4R) -4-methyl-3- (methyl (7H-pyrrolo[2,3-d]pyrimidin-4-yl) amino) piperidin-1-yl) butane-1,4-dione