This compound is primarily used in peptide synthesis, particularly solid-phase peptide synthesis (SPPS), as a protected amino acid derivative. It serves as a building block for constructing peptide chains, where the fluorenylmethoxycarbonyl (Fmoc) group acts as a protective group for the amino functionality. The indole moiety in its structure makes it particularly useful for incorporating tryptophan analogs into peptides, which are essential for studying protein interactions and designing bioactive molecules. Its application is significant in pharmaceutical research, especially in the development of peptide-based drugs and biochemical studies involving tryptophan-rich proteins.