Used primarily as a selective inhibitor of Syk kinase in research settings, enabling studies on immune cell signaling pathways. It helps investigate the role of Syk in allergic responses, inflammation, and autoimmune diseases. Commonly applied in cellular and molecular studies to modulate B-cell receptor signaling and Fc receptor-mediated responses. Also utilized in cancer research, particularly in hematological malignancies where Syk activity contributes to tumor progression. Its specificity makes it a valuable tool for validating Syk as a therapeutic target.