This compound is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a building block for introducing phenylacetic acid derivatives into peptides. The Fmoc (fluorenylmethyloxycarbonyl) group acts as a protective group for the amino functionality, allowing selective deprotection during the synthesis process. It is especially valuable in the development of peptide-based drugs, where precise control over the sequence and structure is critical. Additionally, it is employed in the synthesis of peptide mimetics and modified peptides for research in biochemistry and medicinal chemistry. Its application extends to the production of custom peptides for studies involving protein-protein interactions, enzyme inhibitors, and therapeutic agents.