Used as a key intermediate in the synthesis of pharmaceutical agents, particularly in the development of selective serotonin reuptake inhibitors (SSRIs) and other central nervous system (CNS) active compounds. Its structure allows for effective binding and modulation of neurotransmitter receptors. Commonly employed in medicinal chemistry for constructing bioactive molecules due to the presence of both carboxylic acid and piperazine functionalities, which facilitate derivatization and salt formation. Also utilized in research settings to design novel analogs with improved pharmacokinetic and pharmacodynamic profiles.