Used in peptide synthesis as a building block, 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. This allows for the sequential addition of amino acids to construct peptides with high precision. The N-methyl group enhances the stability and conformational flexibility of the resulting peptides, making it valuable in the development of peptidomimetics and bioactive peptides. Commonly applied in pharmaceutical research for creating peptide-based drugs and studying protein-protein interactions.