Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of vasodilators and cardiovascular drugs. It serves as a building block for introducing chloroethoxy aromatic moieties into active compounds. Also employed in the preparation of liquid crystals and functionalized polymers due to its reactive aldehyde group and flexible ether linkage. Its structure allows for further derivatization via reductive amination, oxidation, or nucleophilic substitution, making it valuable in medicinal chemistry and materials science.