Used in the synthesis of macrocyclic compounds for drug development, particularly in creating peptide mimics and enzyme inhibitors. Its rigid aromatic core and functional groups enable selective binding in biological systems, making it valuable in medicinal chemistry for designing targeted therapies. Also applied in supramolecular chemistry for constructing molecular sensors due to its ability to form stable complexes with metal ions and organic cations. The ester and amino groups allow for easy modification, facilitating conjugation with biomolecules or solid supports in assay development and diagnostic tools.