Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring high enantiomeric purity. Its protected amine and ester functionalities make it suitable for peptide-like structures and beta-amino acid derivatives. Commonly employed in the preparation of central nervous system agents and cardiovascular drugs where the (R)-enantiomer provides desired biological activity. The hydrochloride salt form enhances stability and handling during multi-step syntheses.