Used in drug delivery systems to enhance the solubility and stability of therapeutic agents. Acts as a linker in bioconjugation, facilitating the attachment of targeting molecules to nanoparticles. Commonly employed in the development of liposomal formulations for targeted cancer therapy. Improves the pharmacokinetics and biodistribution of encapsulated drugs. Utilized in surface modification of nanoparticles to prolong circulation time in the bloodstream. Applied in the creation of micelles for the delivery of hydrophobic drugs. Plays a role in the preparation of stimuli-responsive drug delivery systems.