Tofacitinib Impurity L with CAS No: 1675248-19-7 is an impurity standard of Tofacitinib. Tofacitinib is a medication used to treat certain autoimmune diseases, primarily rheumatoid arthritis, psoriatic arthritis and ulcerative colitis. Tofacitinib is classified as a Janus kinase (JAK) inhibitor which means it works by targeting specific enzymes involved in the inflammatory processes associated with these conditions. Tofacitinib is typically taken orally in tablet form. Buy high quality Tofacitinib Impurity L from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of Tofacitinib Impurity L