Used primarily in organic synthesis, this chemical serves as a key reagent for introducing phosphorus-containing groups into molecules. It is particularly valuable in the preparation of phosphonates and phosphinates, which are important intermediates in the production of pharmaceuticals, agrochemicals, and flame retardants. Additionally, it is employed in the synthesis of organophosphorus compounds used as ligands in catalysis, enhancing the efficiency of various chemical reactions. Its reactivity with nucleophiles makes it useful in constructing complex molecular architectures, especially in medicinal chemistry for drug development.