Used as a key intermediate in the synthesis of organophosphorus compounds, particularly in the development of pharmaceuticals and agrochemicals. Its phosphonate group enables it to participate in reactions that form carbon-phosphorus bonds, which are important in creating biologically active molecules. Commonly employed in the preparation of α-aminophosphonates, which exhibit enzyme inhibitory properties and are studied for their antimicrobial, antiviral, and anticancer activities. Also utilized in coordination chemistry as a ligand precursor for metal complexes with catalytic applications. Its oxalate salt form enhances stability and handling during synthetic processes.