Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in medicinal chemistry due to its rigid heterocyclic structure, which can enhance binding affinity to biological targets. Also employed in the preparation of functionalized isoindoline derivatives with potential activity in central nervous system disorders. Its chloro group allows for further functionalization via cross-coupling reactions, making it valuable in drug discovery and development.