Used as a key intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the development of kinase inhibitors and other bioactive molecules. Its phosphonic acid group allows it to mimic phosphate esters in biological systems, making it valuable in the design of enzyme inhibitors. Also employed in materials science for surface modification of metal oxides and in the preparation of functionalized polymers. Its bromo substituent enables further functionalization via cross-coupling reactions, enhancing its utility in organic synthesis.