This compound is widely used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS). It serves as a protected amino acid derivative, where the Fmoc group acts as a temporary protecting group for the amine functionality. The 3-methyl-D-phenylalanine moiety is incorporated into peptide chains to introduce specific structural or functional properties, such as enhancing stability or altering peptide conformation. Its application is crucial in the development of therapeutic peptides, peptidomimetics, and biochemical research tools. Additionally, it is utilized in the synthesis of custom peptides for drug discovery, where precise control over amino acid incorporation is essential.