Used in peptide synthesis as a protected amino acid building block, particularly for introducing a 3-bromophenyl-modified residue into a peptide chain. The Fmoc group allows for solid-phase synthesis under mild basic conditions, enabling the construction of complex peptides for pharmaceutical and biochemical research. The bromine atom serves as a handle for further functionalization via cross-coupling reactions such as Suzuki or Heck reactions, making this compound valuable in the development of modified peptides, peptide-drug conjugates, or probes for bioconjugation and labeling studies.