Tofacitinib Impurity B

Order Tofacitinib Impurity B product with CAS: 1092578-48-7 and speed up your Tofacitinib project. This product is also known as Tofacitinib (3S,4R)-Isomer; (3S,4R)- 4-Methyl-3-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-β-oxo-1-piperidinepropanenitrile. and can be used as a working standard or secondary reference standard. Additional internal validation as per respective FDA regulations/guidelines may require.