Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of central nervous system agents. It serves as a building block for drugs targeting neurological disorders such as Parkinson’s disease and depression due to its structural similarity to biologically active isoquinoline derivatives. Also employed in the preparation of selective receptor ligands for research in neuropharmacology. Its chloro-substituted ring enhances reactivity in cross-coupling reactions, making it valuable in medicinal chemistry for creating diverse compound libraries.