2504210-40-4

N-((3S,4S)-1-Benzyl-4-methylpiperidin-3-yl)-N-methyl-7-tosyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine is an intermediate in the synthesis of Tofacitinib impurity P (T528025), an impurity of Tofacitinib (T528000), an enantiopure stereoisomer of the drug, Janus kinase 3(Jak3) inhibitor (CP-690,550) that has been found to inhibit selected members of the STE7 and STE20 subfamily of kinases.