This chemical is widely used in the field of bioconjugation and drug delivery systems. Its primary application is as a linker molecule in the synthesis of peptide-based therapeutics and prodrugs. The presence of the acid groups allows for conjugation with amine-containing molecules, while the Boc (tert-butoxycarbonyl) group provides protection for amines during chemical reactions, ensuring selective modification. Additionally, its PEG (polyethylene glycol) spacer enhances solubility and stability, making it suitable for creating biocompatible and water-soluble drug conjugates. This compound is particularly valuable in targeted cancer therapies, where it helps in attaching cytotoxic agents to antibodies or peptides for precise delivery to tumor cells. It also finds use in the development of diagnostic agents and imaging probes due to its ability to form stable and functional conjugates.