Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of centrally acting agents such as serotonin and norepinephrine reuptake inhibitors. Its rigid tetrahydronaphthalene scaffold contributes to enhanced binding selectivity and metabolic stability in drug candidates. Commonly employed in the preparation of active pharmaceutical ingredients (APIs) for treating neurological and psychiatric disorders, including depression and anxiety. Also utilized in asymmetric synthesis due to its chiral amine functionality, enabling the creation of enantiomerically pure compounds.