Boc-Phe(4-NH₂)-OMe is a protected derivative of 4-aminophenylalanine, primarily used in peptide synthesis. The Boc (tert-butoxycarbonyl) group protects the α-amino functionality, while the methyl ester (OMe) enables further modifications at the carboxyl end. The unprotected para-amino group (4-NH₂) on the phenyl ring allows for selective functionalization, conjugation, or additional protection steps, making it ideal for constructing complex peptides with specific side-chain reactivity. It is essential in solid-phase peptide synthesis requiring precise deprotection and coupling. Applications include pharmaceutical research for developing peptide-based therapeutics and studying protein interactions, as well as material science for designing functional peptide biomaterials.