This compound is primarily used in the field of bioconjugation and drug delivery systems. It serves as a versatile linker molecule, enabling the attachment of bioactive molecules to various carriers or surfaces. Its structure, featuring a carboxylic acid group, allows for easy conjugation with amines or other functional groups, making it valuable in the development of targeted therapeutics. Additionally, it is employed in the synthesis of peptide-based drugs, where it helps improve solubility and stability. Its polyethylene glycol (PEG) spacer enhances biocompatibility and reduces immunogenicity, making it suitable for applications in pharmaceuticals and biomedical research.