Used as a key intermediate in pharmaceutical synthesis, particularly in the development of active pharmaceutical ingredients (APIs) requiring protected piperazine scaffolds. Its tert-butyloxycarbonyl (Boc) protection allows selective reactivity, making it valuable in multi-step organic reactions, especially in the preparation of kinase inhibitors, antiviral agents, and other bioactive molecules. Commonly employed in medicinal chemistry for constructing complex drug-like structures with improved stability and solubility profiles.