Syk-IN-1 is primarily used in research settings to study the role of spleen tyrosine kinase (Syk) in various cellular processes. It is applied as a selective inhibitor to investigate the signaling pathways involved in immune responses, particularly in B-cell activation and allergic reactions. Researchers utilize Syk-IN-1 to explore its potential therapeutic effects in autoimmune diseases, such as rheumatoid arthritis, and in certain types of cancer where Syk signaling plays a critical role. Additionally, it is employed in preclinical studies to assess its efficacy in reducing inflammation and modulating immune cell function.