Used primarily in peptide synthesis as a chiral building block, this compound serves as an enantiomerically pure amino acid derivative. Its main application lies in the preparation of structured peptides where stereochemistry is critical, such as in pharmaceutical research and development. The fluorenylmethyloxycarbonyl (Fmoc) group allows for mild base-labile protection of the amino function, enabling stepwise assembly of peptides using solid-phase or solution-phase techniques. The ethoxy substituent on the side chain offers a handle for further functionalization or as a structural mimic in peptidomimetic design. It is especially valuable in creating enzyme inhibitors or receptor ligands where precise three-dimensional arrangement affects biological activity.