Boc-(R)-3-Amino-4-(3,4-dichlorophenyl)butyric acid is a chiral, Boc-protected amino acid derivative. It serves as a crucial synthetic intermediate in the preparation of various pharmaceutical compounds. Its structure features a (R)-configured stereocenter, a 3,4-dichlorophenyl group, and a carboxylic acid functionality, making it a versatile building block for medicinal chemistry. This compound is primarily employed in the synthesis of active pharmaceutical ingredients (APIs) targeting the central nervous system. It is a key intermediate in the production of (R)-Baclofen, a selective GABA_B receptor agonist used as a muscle relaxant and antispastic agent. The Boc-protected amine allows for selective deprotection and further functionalization during the synthetic route to the final drug molecule. As a high-purity chiral intermediate, it is essential for ensuring the stereochemical integrity of the final therapeutic agent. Its use is confined to research, development, and manufacturing processes within the pharmaceutical industry.