Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of active pharmaceutical ingredients (APIs) that require a protected piperazine moiety with an aromatic amine functionality. Its structure allows for selective modifications in drug design, making it valuable in creating compounds with central nervous system activity, including antipsychotics and antidepressants. The tert-butyloxycarbonyl (Boc) protection enables controlled deprotection during multi-step syntheses, ensuring compatibility with various reaction conditions. The hydrochloride salt form enhances stability and solubility, facilitating handling and purification in industrial and laboratory settings.