This chemical is primarily used in peptide synthesis as a protected amino acid derivative. It serves as a building block in the creation of complex peptides and proteins, particularly in solid-phase peptide synthesis (SPPS) methods. The Boc (tert-butoxycarbonyl) group acts as a protective group for the amino functionality, preventing unwanted reactions during the synthesis process. The 2-chloro substitution on the phenylalanine moiety can influence the peptide's properties, such as its binding affinity or stability, making it valuable in the development of biologically active peptides or pharmaceutical compounds. Its application is significant in research and drug development, especially in designing peptides with specific structural or functional characteristics.