This compound is N^α-[(1,1-dimethylethoxy)carbonyl]-L-tyrosine with a 2,6-dichlorobenzyl protecting group on the phenolic side chain (Boc-Tyr(2,6-Cl₂Bzl)-OH). It serves as a key protected amino acid building block in solid-phase peptide synthesis, where the Boc group protects the α-amino functionality and the 2,6-Cl₂Bzl group shields the tyrosine hydroxyl to prevent side reactions. This orthogonal protection strategy enables selective deprotection and stepwise coupling of amino acids in multi-step syntheses. It is essential for producing complex peptides and proteins used in biochemical research, pharmaceutical development, and medicinal chemistry, offering stability across diverse reaction conditions.