Used in peptide synthesis and pharmaceutical research as a protected macrocyclic intermediate. Its multiple Boc-protected amino groups and ester functionalities allow selective deprotection and coupling, making it valuable in constructing complex peptide architectures. Commonly employed in the development of protease inhibitors and cyclic peptide drugs due to its rigid, pre-organized structure. Also applied in bioconjugation strategies and the synthesis of peptide-based diagnostics where controlled solubility and stability are required.