Used in peptide synthesis as a chiral building block, particularly in the preparation of radiolabeled compounds for imaging studies due to the presence of the iodine atom. The Fmoc group allows for mild deprotection conditions compatible with solid-phase synthesis, making it suitable for constructing complex peptides used in pharmaceutical research. Its stereochemistry is critical for ensuring biological activity in peptide-based drug candidates. Also employed in the development of targeted therapies where iodinated aromatic moieties enhance binding affinity or enable tracking via nuclear imaging techniques.