Used as an intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the preparation of phosphonate-based compounds that exhibit biological activity. It serves as a building block in Horner-Wadsworth-Emmons reactions, enabling the formation of carbon-carbon double bonds in fine chemical manufacturing. Its chlorinated aromatic structure enhances reactivity in nucleophilic substitution processes, making it valuable in the development of herbicides and plant growth regulators. Also employed in research for designing enzyme inhibitors due to the phosphonate group’s ability to mimic phosphate esters in metabolic pathways.