Used primarily in bioconjugation and drug delivery systems, this chemical serves as a linker to attach bioactive molecules to nanoparticles, proteins, or other substrates. Its PEG (polyethylene glycol) chain enhances solubility and reduces immunogenicity, making it valuable in therapeutic applications. It is also employed in surface modification to improve biocompatibility of materials. Additionally, it plays a role in creating hydrogels for controlled drug release and tissue engineering. Its hydroxyl group allows for further functionalization, enabling customization for specific biomedical or research needs.