Used in bioconjugation and drug delivery systems to improve solubility and stability of therapeutic agents. Commonly employed in the modification of proteins, peptides, and nanoparticles to enhance their pharmacokinetic properties. Facilitates targeted delivery by attaching to specific ligands or antibodies. Applied in the development of prodrugs, where it acts as a linker that can be cleaved under specific conditions to release the active drug. Also utilized in research for labeling and tracking biomolecules in cellular and molecular studies.