Boc-N-Me-Tyr(Bzl)-OH (CAS 64263-81-6), also known as N-tert-butoxycarbonyl-N-methyl-O-benzyl-L-tyrosine, is a protected amino acid derivative widely used in peptide synthesis. It features a Boc (tert-butoxycarbonyl) group on the nitrogen to safeguard the amino functionality during coupling reactions, and a benzyl (Bzl) group protecting the phenolic hydroxyl of the tyrosine side chain, enhancing stability under synthetic conditions. The N-methylation of the tyrosine backbone introduces conformational rigidity and improves resistance to enzymatic degradation, making it valuable in the design of bioactive peptides and peptidomimetics.