Used in pharmaceutical synthesis as a protected piperazine intermediate, enabling selective reactions at other functional sites. Commonly employed in the development of active pharmaceutical ingredients (APIs), particularly in the construction of complex molecules requiring controlled nitrogen reactivity. Its Boc-protected amine group ensures stability during multi-step reactions and allows for deprotection under mild acidic conditions, making it ideal for drug discovery and medicinal chemistry workflows. Frequently found in the synthesis of kinase inhibitors, CNS agents, and other bioactive compounds where piperazine scaffolds enhance pharmacokinetic properties.