This chemical is widely used in bioconjugation and chemical biology for modifying biomolecules. It serves as a linker or spacer in drug delivery systems, enhancing the solubility and stability of therapeutic compounds. Its hydrophilic PEG (polyethylene glycol) chain improves biocompatibility and reduces immunogenicity, making it suitable for creating PEGylated drugs. It is also utilized in surface modification of nanoparticles to increase their circulation time in the body. Additionally, it plays a role in the development of hydrogels and biomaterials for tissue engineering and regenerative medicine applications.