Used primarily as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of selective serotonin reuptake inhibitors (SSRIs) and other central nervous system (CNS) active agents. Its structural features allow for effective modification to produce bioactive molecules with improved binding affinity and metabolic stability. Commonly employed in research settings for the preparation of analogs in medicinal chemistry programs targeting neurological disorders such as depression, anxiety, and obsessive-compulsive disorder. Also utilized in the production of radiolabeled derivatives for receptor binding studies. Its hydrochloride salt form enhances solubility and handling in aqueous reaction media, making it suitable for coupling reactions and multistep syntheses in drug discovery.