Used as a versatile building block in organic synthesis, particularly in the development of phosphonate-based compounds. It is applied in the modification of biomolecules, such as peptides and proteins, to enhance their stability and functionality. The compound is also utilized in the creation of functionalized polymers and materials for biomedical applications, including drug delivery systems and tissue engineering. Its PEG (polyethylene glycol) chain provides water solubility and biocompatibility, making it suitable for use in aqueous environments and biological systems. Additionally, it serves as a linker or spacer in the design of targeted therapeutics and diagnostic agents.