Used as a key intermediate in the synthesis of organophosphorus compounds, particularly in the development of pharmaceuticals and agrochemicals. Its structure allows for the introduction of phosphonate groups into complex molecules, enabling the creation of biologically active agents. Commonly employed in Horner-Wadsworth-Emmons reactions for the formation of carbon-carbon double bonds, especially in the preparation of conjugated systems found in dyes and functional materials. Also finds use in research settings for the design of novel enzyme inhibitors due to its ability to mimic phosphate esters in metabolic pathways.