Used primarily as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of central nervous system agents and antidepressants. Its structural rigidity and functional groups make it valuable in designing bioactive molecules with improved selectivity and metabolic stability. Commonly employed in the preparation of serotonin and norepinephrine reuptake inhibitors. Also utilized in the production of certain antiviral and anti-inflammatory compounds due to its favorable pharmacokinetic properties. Its hydrochloride salt form enhances solubility and handling in industrial processes.