Used primarily as a protected amino acid derivative in solid-phase peptide synthesis. The fluorenylmethyloxycarbonyl (Fmoc) group provides excellent protection for the amine functionality, allowing selective deprotection under mild basic conditions while maintaining stability during coupling steps. The 3-chlorophenyl substituent on the beta carbon makes this compound a valuable building block for introducing non-natural amino acid residues into peptides, enhancing structural diversity and influencing biological activity. Commonly employed in the synthesis of peptidomimetics and bioactive molecules where steric and electronic effects of the chlorinated aromatic ring can modulate receptor binding or metabolic stability. Its chiral center ensures stereocontrolled incorporation, making it suitable for pharmaceutical research and development of enzyme inhibitors or receptor ligands.