Used in bioconjugation to modify peptides, proteins, and other biomolecules, enhancing their solubility and stability. It is also applied in drug delivery systems to improve the pharmacokinetics and bioavailability of therapeutic agents. Additionally, it serves as a linker in the development of antibody-drug conjugates (ADCs) and other targeted therapies. Its hydrophilic properties make it suitable for surface modification of nanoparticles, enabling better biocompatibility and reduced immunogenicity.