Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of active pharmaceutical ingredients (APIs) where piperazine rings are structural components. Its tert-butoxycarbonyl (Boc) protecting group allows for controlled reactivity during multi-step organic syntheses, making it valuable in drug discovery and process chemistry. Commonly employed in the preparation of central nervous system agents, antipsychotics, and other bioactive molecules requiring functionalized piperazine derivatives.