Used in organic synthesis as a building block for cross-coupling reactions, particularly in Suzuki-Miyaura coupling, to construct biaryl compounds. Its boronic acid group enables the formation of carbon-carbon bonds, making it valuable in pharmaceutical and agrochemical research for developing complex heterocyclic systems. The chloroisoquinoline moiety can act as a precursor for further functionalization, allowing access to bioactive molecules and potential drug candidates. Commonly employed in medicinal chemistry for scaffold diversification and library synthesis.