Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the production of bioactive molecules and active pharmaceutical ingredients (APIs) where stereochemistry plays a critical role. Its hydrochloride salt form enhances stability and solubility, making it suitable for use in multi-step organic reactions. Commonly employed in the development of antibiotics, enzyme inhibitors, and central nervous system agents due to its ability to influence the three-dimensional structure of drug candidates. Also utilized in asymmetric synthesis to introduce chirality, improving the selectivity and efficacy of therapeutic compounds.