Used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS), as a building block for incorporating modified phenylalanine residues into peptides. The Fmoc group provides protection for the amino group during the synthesis process, while the iodine atom on the phenyl ring allows for further functionalization through cross-coupling reactions. This compound is valuable in the development of peptide-based drugs, biomaterials, and research tools, enabling the creation of peptides with specific structural and functional properties. Its application is especially relevant in medicinal chemistry and biochemistry for designing peptides with enhanced stability, binding affinity, or biological activity.