This chemical is primarily used in the field of bioconjugation and drug delivery systems. It serves as a versatile linker molecule, enabling the attachment of various functional groups to biomolecules such as proteins, peptides, or nucleic acids. Its pegylated structure enhances solubility and stability, making it suitable for applications in targeted drug delivery and therapeutic formulations. Additionally, it is utilized in the development of advanced materials, including hydrogels and nanoparticles, where controlled release and biocompatibility are essential. Its phosphonic acid ester group allows for efficient binding to surfaces, particularly in the creation of functionalized coatings for medical devices or biosensors.