Used in organic synthesis and pharmaceutical research, particularly in Suzuki-Miyaura cross-coupling reactions to construct biaryl compounds. Its boronic acid group enables efficient carbon-carbon bond formation, making it valuable for developing nitrogen-containing heterocyclic systems found in bioactive molecules. Commonly applied in the synthesis of potential therapeutic agents, including those targeting neurological disorders and cancer. Also serves as a building block in materials science for designing fluorescent probes and organic electronic materials due to the rigid isoquinoline scaffold.