Used as a key intermediate in the synthesis of biologically active compounds, particularly in agrochemicals and pharmaceuticals. Its phosphonate group enables it to mimic phosphate esters in metabolic pathways, making it valuable in the development of enzyme inhibitors. Commonly employed in the preparation of cyclopropyl-containing analogs for herbicidal and antiviral agents. Also utilized in medicinal chemistry research for structure-activity relationship studies due to its rigid cyclopropyl ring and functional handle for further derivatization.