Tofacitinib Impurity 44

N-((3R,4R)-1-benzyl-4-methylpiperidin-3-yl)-N-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine Tofacitinib Impurity Tofacitinib Impurity 36 6,7-Dihydro-N-methyl-N-[(3R,4R)-4-methyl-3-piperidinyl]-5H-pyrrolo[2,3-d]pyrimidin-4-amine 7H-Pyrrolo[2,3-d]pyriMidin-4-aMine, N-Methyl-N-[(3R,4R)-4-Methyl-1-(phenylMethyl)-3-piperidinyl]-7-[(4-Met hylphenyl)sulfonyl]- 1-Piperidinepropanoic acid, 4-methyl-3-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-β-oxo-, ethyl ester, (3R,4R)- 3-((3R,4R)-4-Methyl-3-(Methyl(7H-pyrrolo[2,3-d]pyriMidin-4-yl)aMino)piperidin-1-yl)-3-oxopropanaMide 3-((3S,4R)-4-Methyl-3-(Methyl(7H-pyrrolo[2,3-d]pyriMidin-4-yl)aMino)piperidin-1-yl)-3-oxopropanenitrile N-methyl-N-((3R,4R)-4-methylpiperidin-3-yl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine Tofacitinib Impurity butyl 3-((3R,4R)-4-methyl-3-(methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)piperidin-1-yl)-3-oxopropanoate 3-PiperidinaMine, 1-acetyl-N,4-diMethyl-N-1H-pyrrolo[2,3-d]pyriMidin-4-yl-, (3R,4R)- (9CI) N-(2,6-dimethylphenyl)-2-((2,6-dimethylphenyl)amino)acetamide (3S,4S)-1-benzyl-N,4-diMethylpiperidin-3-aMine 1-BENZYL-N,4-DIMETHYLPIPERIDIN-3-AMINE DIHYDROCHLORIDE Tofacitinib Related Compound Tofacitinib Impurity 45 Tofacitinib Impurity 2