This chemical is widely used in bioconjugation and drug delivery systems due to its unique structure, which includes Boc protection and PEGylation. The Boc group allows for selective deprotection, enabling controlled reactions in peptide synthesis and modification. The PEG chains enhance solubility, reduce immunogenicity, and improve stability of the conjugated molecules, making it suitable for applications in targeted drug delivery and biopharmaceuticals. The propargyl groups facilitate click chemistry reactions, such as copper-catalyzed azide-alkyne cycloaddition (CuAAC), which is essential for attaching functional moieties or labeling biomolecules. This compound is particularly valuable in the development of antibody-drug conjugates (ADCs), where precise attachment of therapeutic agents to antibodies is required. Additionally, its properties make it useful in the creation of peptide-based therapeutics, imaging probes, and diagnostic tools.