Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of antimalarial and anticancer agents. Its structure allows for functionalization that enhances biological activity in drug candidates. Also employed in research settings to explore new isoquinoline-based therapeutics with improved efficacy and selectivity. Shows potential in the design of kinase inhibitors due to its ability to interact with specific enzyme targets. Additionally, utilized in the preparation of fluorescent probes for biochemical imaging, leveraging its photophysical properties.