Used in pharmaceutical synthesis as an intermediate for developing bioactive molecules, particularly in the production of nitrogen-containing heterocyclic compounds with potential antimicrobial and anticancer properties. Its structure supports the construction of more complex isoquinoline-based drugs. Commonly employed in research settings for medicinal chemistry projects aiming at kinase inhibition and central nervous system agents. Also utilized in the development of fluorescent probes due to the inherent photophysical properties of the isoquinoline scaffold.