Fmoc-Tyr(2-Br-Z)-OH is primarily used in peptide synthesis as a protected tyrosine derivative. The Fmoc group ensures the amino group is protected during the synthesis process, while the 2-Br-Z group protects the hydroxyl side chain of tyrosine. This compound is crucial for constructing peptides where tyrosine must remain intact until the final deprotection step. It is widely applied in the production of peptide-based drugs, research peptides, and biochemical studies, enabling precise control over peptide assembly and functionality. Its stability under standard peptide synthesis conditions makes it a valuable reagent in both academic and industrial settings.