Used in peptide synthesis as a building block to introduce modified phenylalanine residues into peptide chains. It is particularly valuable in creating peptides with enhanced stability or specific biological activities. The Boc (tert-butoxycarbonyl) group protects the amino group during synthesis, ensuring selective reactions. The 2-methyl modification on the phenylalanine side chain can influence peptide conformation and interactions, making it useful in drug development and biochemical research. Commonly applied in the production of pharmaceuticals, enzyme inhibitors, and bioactive peptides.