Used as a key 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 selective functionalization, making it valuable in building complex molecules in medicinal chemistry. Also employed in the development of agrochemicals and specialty organic compounds where chlorinated aromatic aldehydes are required. Its aldehyde group enables condensation and coupling reactions, facilitating the creation of larger, biologically active molecules.