oclacitinib and its Impurities
Oclacitinib is labeled to treat atopic dermatitis and itchiness caused by allergies in dogs. It is a veterinary medication. Reference standards of Oclacitinib API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

![trans-N,N-Dimethyl-4-(methyl-7H-pyrrolo[2,3-d]pyri PA 15 0971000](https://www.pharmaffiliates.com/pimages/PA150971000.jpg)
trans-N,N-Dimethyl-4-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)cyclohexanemethanesulfonamide
trans-N,N-Dimethyl-4-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)cyclohexanemethanesulfonamide
Catalogue No.:PA 15 0971000
CAS :
1312034-35-7
Molecular Formula : C16H25N5O2S
Molecular Weight : 351.47

![trans-4-[Methyl[7-[(4-methylphenyl)sulfonyl]-7H-py PA 15 0971001](https://www.pharmaffiliates.com/pimages/PA150971001.jpg)
trans-4-[Methyl[7-[(4-methylphenyl)sulfonyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]amino]cyclohexanemethanol
trans-4-[Methyl[7-[(4-methylphenyl)sulfonyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]amino]cyclohexanemethanol
Catalogue No.:PA 15 0971001
CAS :
2538954-26-4
Molecular Formula : C21H26N4O3S
Molecular Weight : 414.52

![rel-((1r,4r)-4-(Methyl(7-tosyl-7H-pyrrolo[2,3-d]py PA 15 0971002](https://www.pharmaffiliates.com/pimages/PA150971002.jpg)
rel-((1r,4r)-4-(Methyl(7-tosyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)cyclohexyl)methyl 4-methylbenzenesulfonate
rel-((1r,4r)-4-(Methyl(7-tosyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)cyclohexyl)methyl 4-methylbenzenesulfonate
Catalogue No.:PA 15 0971002
CAS :
1208319-32-7
Molecular Formula : C28H32N4O5S2
Molecular Weight : 568.71