This chemical is widely used in the field of bioconjugation and drug delivery. It serves as a linker or spacer molecule, enhancing the solubility and stability of therapeutic compounds. Its polyethylene glycol (PEG) component reduces immunogenicity and prolongs the circulation time of drugs in the body. It is also employed in the modification of proteins, peptides, and other biomolecules to improve their pharmacokinetic properties. Additionally, it finds applications in the development of targeted drug delivery systems, where it helps in attaching targeting ligands to drug carriers. Its versatility makes it valuable in creating advanced pharmaceutical formulations and biomedical research tools.