Used primarily in peptide synthesis, this compound serves as a protected amino acid derivative of N-methyl-O-methyl-L-tyrosine. The Fmoc group protects the alpha-amino group, enabling selective deprotection during solid-phase peptide synthesis (SPPS). The N-methyl group on the alpha-nitrogen facilitates incorporation of N-methylated residues, which can enhance peptide stability and bioavailability, while the O-methyl group on the tyrosine phenolic side chain prevents unwanted reactions during synthesis. It is particularly valuable for creating peptides with specific modifications, such as N- and O-methylation, influencing peptide conformation, activity, and interactions with biological targets. Applications include drug development, where modified peptides mimic or inhibit natural processes, as well as studies of protein-protein interactions and enzyme mechanisms, providing insights into molecular recognition and signaling pathways.