Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) where stereochemistry plays a critical role in biological activity. Its amine functionality allows for easy incorporation into complex molecules through amide bond formation or reductive amination. Commonly employed in the preparation of enzyme inhibitors and receptor agonists/antagonists due to its structural rigidity and defined stereochemistry. Also utilized in asymmetric synthesis as a ligand precursor or auxiliary in catalytic reactions. Its hydrochloride salt form enhances solubility and stability, making it suitable for industrial-scale processes.