Used as an intermediate in organic synthesis, particularly in the preparation of phosphorylated compounds with biological activity. It serves in the development of pharmaceuticals and agrochemicals due to its ability to introduce phosphonate groups into complex molecules. Commonly employed in Horner-Wadsworth-Emmons reactions for the formation of carbon-carbon double bonds, enabling the synthesis of unsaturated ketones and other functionalized structures. Its reactivity makes it valuable in creating analogs for medicinal chemistry research and in the design of enzyme inhibitors.