This compound is widely used in bioconjugation and drug delivery systems due to its polyethylene glycol (PEG) spacer, which enhances solubility and reduces immunogenicity. It serves as a linker in the synthesis of peptide-based therapeutics, enabling the attachment of bioactive molecules to larger carriers or surfaces. The Boc (tert-butoxycarbonyl) group provides protection for amine functionalities during chemical reactions, ensuring selective modification. The terminal carboxylic acid group allows for further conjugation with amines or other reactive groups, making it versatile for creating stable amide bonds. Its applications include the development of targeted drug delivery systems, antibody-drug conjugates, and biomaterials for tissue engineering. Additionally, it is utilized in the preparation of hydrogels and other biocompatible materials for medical and pharmaceutical research.