This compound is primarily utilized in the field of bioconjugation and chemical biology, where it serves as a versatile linker for attaching various molecules, such as proteins, peptides, or drugs, to polyethylene glycol (PEG) chains. The bromoacetamido group enables selective conjugation with thiol-containing biomolecules, facilitating the creation of stable thioether bonds. This property is particularly useful in drug delivery systems, where PEGylation enhances the solubility, stability, and circulation time of therapeutic agents. Additionally, the t-butyl ester group provides protection for carboxylic acids during synthesis, allowing for controlled deprotection and further functionalization. Its applications extend to the development of targeted therapies, diagnostic agents, and advanced biomaterials.