Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of active pharmaceutical ingredients (APIs) where a protected piperazine moiety is required. The tert-butoxycarbonyl (Boc) group allows for controlled deprotection during multi-step syntheses, making it valuable in constructing complex drug molecules. The benzoic acid functionality enables further derivatization, such as amide bond formation, useful in creating biologically active compounds. Commonly applied in medicinal chemistry for optimizing solubility, stability, and binding characteristics of drug candidates.