Used in bioconjugation to modify proteins, peptides, and other biomolecules, enhancing their stability and solubility in aqueous solutions. Commonly applied in drug delivery systems to improve the pharmacokinetics and bioavailability of therapeutic agents. Utilized in the preparation of PEGylated drugs, which can reduce immunogenicity and prolong circulation time in the body. Also employed in the development of hydrogels and other biomaterials for tissue engineering and regenerative medicine. Plays a role in surface modification of nanoparticles to improve biocompatibility and targeting efficiency in nanomedicine applications.