Used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS), as a building block for incorporating thienylalanine residues into peptides. It is valuable in the development of peptide-based drugs, biomaterials, and research tools due to its unique thiophene side chain, which can influence peptide stability, conformation, and interactions. The Fmoc group provides protection for the amino group during synthesis, ensuring selective reactions. This compound is also employed in studying protein folding, enzyme activity, and receptor-ligand interactions, making it a versatile tool in biochemistry and medicinal chemistry.