The molecular formula of this intermediate is C13H10ClN3O2S, and its molecular weight is 307.755. Its precise molecular structure enables the efficient and high-purity production of tofacitinib. Therefore, the tofacitinib intermediate 1,4-chloro-7-p-toluenesulfonyl-7H pyrrolo[2,3-d]pyrimidine is an important component in the pharmaceutical industry to provide effective treatment for autoimmune diseases. Our products are manufactured using state-of-the-art processes to ensure the highest quality and consistency. We understand the importance of having reliable and pure intermediates in pharmaceutical production, which is why we are committed to maintaining the strictest standards during our manufacturing process. Our tofacitinib intermediate 1,4-chloro-7-p-toluenesulfonyl-7H pyrrolo[2,3-d]pyrimidine undergoes rigorous purity, stability and safety testing to allow our customers to Confident in the reliability of large-scale synthesis of tofacitinib.JDK owns the first-class production facilities and Quality management equipments, which assures the stable supply of API intermediates. Professional team assure R&D of the product. Against both, we are searching for CMO & CDMO in domestic and international market.