Used in solid-phase peptide synthesis as a protected amino acid building block. The BOC and FMOC groups provide orthogonal protection for the amine functionalities, allowing selective deprotection during stepwise peptide assembly. The D-phenylalanine core, modified with a 4-(aminomethyl) side chain, introduces structural stability and resistance to enzymatic degradation, making it valuable in the synthesis of peptidomimetics and bioactive peptides with enhanced metabolic stability. Commonly applied in pharmaceutical research for developing peptide-based drugs, especially where conformational control and stereochemistry are critical.