Used in drug delivery systems to improve solubility and circulation time of therapeutic agents. Acts as a linker in bioconjugation, connecting drugs, proteins, or peptides to targeting molecules or nanoparticles. Commonly employed in the development of PEGylated pharmaceuticals to reduce immunogenicity and prevent rapid clearance. Applied in tissue engineering and regenerative medicine as a building block for hydrogels and biocompatible coatings. Also utilized in diagnostic assays and biosensors to immobilize biomolecules on surfaces while maintaining their activity.