Used as a key intermediate in Suzuki-Miyaura cross-coupling reactions for the synthesis of biologically active isoquinoline derivatives. Its boronate ester group enables efficient carbon-carbon bond formation, making it valuable in pharmaceutical research and development of nitrogen-containing heterocyclic compounds. Commonly applied in the preparation of potential drug candidates targeting central nervous system disorders and anticancer agents. Stable and compatible with a wide range of functional groups, it supports late-stage functionalization in complex molecule assembly.