This chemical is primarily utilized in the field of bioconjugation and drug delivery systems due to its unique properties. The propargyl group enables click chemistry reactions, particularly copper-catalyzed azide-alkyne cycloaddition (CuAAC), which is widely used for attaching molecules to biomolecules like proteins, peptides, or nucleic acids. The Boc (tert-butoxycarbonyl) and t-butyl ester groups serve as protective groups, allowing selective deprotection during synthesis to achieve precise molecular modifications. The PEG (polyethylene glycol) spacers enhance solubility, reduce immunogenicity, and improve the pharmacokinetics of conjugated drugs or biomolecules. This compound is particularly valuable in the development of targeted therapeutics, diagnostic probes, and advanced materials for biomedical research. Its modular design makes it a versatile tool in organic synthesis and bioconjugation strategies.