Used as a key intermediate in organic synthesis, particularly in the preparation of phosphine ligands for transition metal catalysis. It plays a significant role in cross-coupling reactions, including palladium-catalyzed processes, which are widely applied in pharmaceutical and agrochemical manufacturing. Its methoxy and chloro substituents allow for selective functionalization, enabling fine-tuning of ligand properties in catalytic systems. Additionally, it serves in the development of specialty organophosphorus compounds for materials science and ligand design.