Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors and other bioactive molecules. Its halogenated structure allows for selective cross-coupling reactions, making it valuable in medicinal chemistry for constructing complex isoquinoline-based compounds. Commonly employed in research settings to design potential anticancer, anti-inflammatory, and central nervous system agents. Also utilized in the preparation of ligands for catalysis and in the discovery of new drug candidates through combinatorial chemistry.