D-3-Bromophenylalanine is a non-natural, chiral amino acid derivative characterized by a bromine substituent at the meta-position of the phenyl ring attached to the D-alanine backbone. It serves as a crucial chiral building block in pharmaceutical synthesis. Its primary application is in the research and development of peptide-based drugs and bioactive molecules. The bromine atom on the aromatic ring provides a versatile handle for further functionalization via cross-coupling reactions (e.g., Suzuki, Sonogashira), enabling the introduction of diverse pharmacophores. The D-configuration of the amino acid center is essential for conferring metabolic stability and modulating the biological activity of the resulting peptides, making it valuable for creating protease-resistant analogs or specific receptor ligands. This compound is commercially available as a high-purity intermediate for medicinal chemistry. Handling requires standard precautions for laboratory chemicals, and it should be stored in a cool, dry place.