Product Name:4-Chloro-7-Tosyl-7H-Pyrrolo[2,3-d]Pyrimidine Synonyms:4-Chloro-7-(4-methylphenylsulfonyl)-7H-pyrrolo[2,3-d]pyrimidine Molecular Formula:C13H10ClN3O2S Molecular Weight:307.76 CAS NO:479633-63-1 Usage:Tofacitinib Citrate