This compound is primarily used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS) methods. It serves as a protected amino acid derivative, where the Fmoc (fluorenylmethyloxycarbonyl) group acts as a temporary protecting group for the amine functionality. The presence of the 4-chloro group on the homophenylalanine side chain allows for the introduction of specific structural or functional modifications in the peptide sequence. This makes it valuable in the development of peptides with tailored properties, such as enhanced binding affinity or stability, for applications in drug discovery, biochemical research, and the study of protein-protein interactions. Additionally, its use enables the synthesis of peptides with non-natural amino acids, expanding the diversity of peptide-based compounds for therapeutic and investigative purposes.