Used in bioconjugation and pharmaceutical research, this compound serves as a linker for attaching molecules to proteins, peptides, or other biomolecules. Its Boc group provides protection during synthesis, while the PEG3 spacer enhances solubility and reduces steric hindrance. The terminal hydroxyl group allows for further functionalization, making it valuable in drug delivery systems, targeted therapies, and the development of bioconjugates. It is particularly useful in creating stable, water-soluble compounds for biomedical applications.