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. Its carboxylic acid group allows for coupling reactions with amines or alcohols, enabling the construction of complex molecules. The Boc-protected piperazine provides stability during multi-step syntheses and can be deprotected under mild acidic conditions to release the free amine for further modification. Commonly employed in medicinal chemistry for drug discovery programs targeting central nervous system agents, kinase inhibitors, or receptor modulators.