Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of alkaloid-based drugs with potential antitumor and antimicrobial activities. Its structure supports the creation of bioactive molecules in medicinal chemistry. Also employed in research for designing novel compounds targeting central nervous system disorders due to its isoquinoline core, which can interact with neurological receptors. Additionally, it serves as a building block in the preparation of fluorescent probes and organic semiconductors in materials science.