Used primarily as a pharmaceutical intermediate in the synthesis of antihistamine and psychoactive compounds. Its structure supports the development of agents targeting central nervous system disorders due to the presence of a piperazine ring and lipophilic aromatic groups. Commonly employed in research settings to design dopamine and serotonin receptor modulators. Also utilized in the preparation of drug candidates for allergies, anxiety, and depression. Its ester functionality allows for easy modification, making it valuable in medicinal chemistry for structure-activity relationship studies.