Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the production of vasodilator drugs and certain antihypertensive agents. Its structure allows for selective functionalization, making it valuable in creating active pharmaceutical ingredients. It is also employed in the development of agrochemicals and fine chemicals where chlorinated aromatic aldehydes are required. The presence of methoxy and chloro groups enhances reactivity in cross-coupling and nucleophilic substitution reactions, supporting its role in building complex organic molecules.