Fmoc-(S)-2,3-dihydro-2-Oxo-Tryptophan is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS) methods. Its Fmoc (fluorenylmethyloxycarbonyl) protecting group allows for controlled deprotection during the synthesis process, enabling the stepwise construction of complex peptides. This compound is especially valuable in the synthesis of peptides containing tryptophan derivatives, as it provides a stable and reactive intermediate for coupling reactions. It is also employed in the development of biologically active peptides and peptidomimetics, which are essential in drug discovery and biochemical research. Additionally, its unique structure makes it useful in studying enzyme-substrate interactions and designing inhibitors for therapeutic applications.