Used in the treatment of inflammatory and autoimmune diseases, particularly psoriasis and psoriatic arthritis. It functions as a selective inhibitor of Janus kinase (JAK), with higher specificity for JAK1, modulating signaling pathways involved in immune responses and inflammation. This compound helps reduce symptoms such as joint pain, swelling, and skin lesions by suppressing overactive immune signaling. It is designed for oral administration and offers improved target selectivity, potentially minimizing side effects commonly associated with broader JAK inhibition. Also under investigation for use in other immune-mediated conditions like rheumatoid arthritis and inflammatory bowel disease.