TyK2-IN-2 is primarily utilized in the field of medical research, particularly in the study of autoimmune diseases and cancers. It functions as a selective inhibitor of the TYK2 enzyme, which plays a crucial role in signaling pathways associated with immune responses. By inhibiting TYK2, this compound helps researchers understand the mechanisms underlying inflammatory conditions such as psoriasis, lupus, and rheumatoid arthritis. Additionally, it is used in preclinical studies to explore potential therapeutic strategies for targeting cancers that are driven by dysregulated immune signaling. Its application extends to drug development, where it serves as a tool for evaluating the efficacy and safety of new treatments aimed at modulating the immune system.