Tofacitinib Impurity X

Chemical Name: (3R,4R)-N,4-dimethyl-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidin-3-amine

Smiles: C[C@H](CC1)[C@@H](NC)CN1C2=NC=NC3=C2C=CN3