PF-06700841 P-Tosylate is primarily utilized in the field of medical research and drug development. It is a potent and selective inhibitor of TYK2 (Tyrosine Kinase 2), which plays a significant role in immune signaling pathways. This compound is being investigated for its potential therapeutic applications in treating autoimmune diseases, such as psoriasis, inflammatory bowel disease, and systemic lupus erythematosus. By targeting TYK2, it aims to modulate the immune response and reduce inflammation associated with these conditions. Additionally, it is used in preclinical studies to better understand the role of TYK2 in various immunological processes and to evaluate its efficacy and safety as a potential treatment option.