Used in pharmaceutical synthesis as a protected intermediate for developing active drug substances, particularly in the creation of serotonin receptor modulators and other central nervous system agents. The Boc-protected piperazine scaffold allows for selective functionalization at the piperazine nitrogen, enabling controlled coupling reactions in multi-step syntheses. Its methoxyphenyl group contributes to aromatic interactions in target binding, making it valuable in medicinal chemistry for optimizing potency and metabolic stability. Commonly employed in research settings for generating compound libraries in drug discovery programs.