This chemical is primarily used in bioconjugation and click chemistry applications. Its structure, featuring PEG (polyethylene glycol) chains and a propargyl group, makes it highly suitable for attaching biomolecules, such as proteins or peptides, to other compounds or surfaces. The t-Boc (tert-butyloxycarbonyl) protecting group allows for controlled deprotection, enabling selective reactions. It is often employed in drug delivery systems to create PEGylated conjugates, enhancing the solubility, stability, and bioavailability of therapeutic agents. Additionally, the propargyl groups facilitate copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions, a key process in labeling and modifying biomolecules for research or diagnostic purposes.