Used in bioconjugation and drug delivery systems, it acts as a linker to connect biomolecules like proteins, peptides, or antibodies to other functional groups or nanoparticles. Its polyethylene glycol (PEG) segment enhances solubility and reduces immunogenicity, making it suitable for therapeutic applications. It is also employed in modifying surfaces to improve biocompatibility in medical devices or biosensors. Additionally, it plays a role in creating hydrogels for controlled drug release and tissue engineering due to its ability to form stable and biocompatible structures.