Tofacitinib Amide Impurity

Chemical Name: 1-​Piperidinepropanamid​e, 4-​methyl-​3-​(methyl-​7H-​pyrrolo[2,​3-​d]​pyrimidin-​4-​ylamino)​-​β-​oxo-​, (3R,​4R)​-; (3R,4R)-4-Methyl-3-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-β-oxo-1-piperidinepropanamide

Smile: C[C@H]1[C@@H](N(C)C2=NC=NC3=C2C=CN3)CN(C(CC(N)=O)=O)CC1