Used in bioconjugation and click chemistry applications, it serves as a linker for attaching biomolecules or functional groups to surfaces or other molecules. Its trityl group provides stability and protection during synthesis, while the PEG spacer enhances solubility and reduces steric hindrance. The azide group enables efficient reactions with alkynes via copper-catalyzed azide-alkyne cycloaddition (CuAAC), making it valuable in drug delivery, polymer chemistry, and the development of targeted therapeutics or diagnostics. It is particularly useful in modifying peptides, proteins, or nanoparticles for biomedical research.