Used as an intermediate in the synthesis of pharmaceuticals, particularly in the production of angiotensin II receptor antagonists like valsartan and related antihypertensive drugs. Its structure allows for the formation of biaryl systems common in many bioactive molecules. Also employed in organic synthesis for constructing complex aromatic aldehydes used in agrochemicals and functional materials. The chloro and aldehyde functional groups provide sites for further chemical modifications, making it valuable in medicinal chemistry research and development.