Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of compounds with central nervous system activity. Commonly employed in the preparation of isoquinoline-based drugs, including certain analgesics, antipsychotics, and anticancer agents. Its structure allows for functionalization at multiple sites, making it valuable in medicinal chemistry for building biologically active molecules. Also utilized in research settings for the design of novel heterocyclic compounds with potential therapeutic applications.