Used extensively in biomedical research for surface modification and bioconjugation due to its biocompatibility and water solubility. Commonly applied in creating stealth coatings for nanoparticles, enhancing their circulation time in the body. Utilized in drug delivery systems to improve targeting and reduce immune response. Also employed in tissue engineering for modifying scaffolds to promote cell adhesion and growth. Its azide termination allows for efficient click chemistry reactions, enabling precise attachment of biomolecules or functional groups.