Used in research as a key intermediate in the synthesis of tyrosine kinase inhibitors, particularly in the development of anticancer agents. It plays a role in targeting signaling pathways involved in tumor growth and proliferation. Its structure supports binding to specific enzyme active sites, making it valuable in structure-activity relationship (SAR) studies for optimizing drug candidates. Also employed in the preparation of fluorescent probes due to its quinoline core, which can enhance detection sensitivity in cellular imaging. Limited to laboratory and pharmaceutical R&D; not used in consumer products.