Used as an intermediate in pharmaceutical synthesis, particularly in the development of active pharmaceutical ingredients (APIs) that require piperazine backbone modifications. Its protected piperazine structure allows selective functionalization, making it valuable in constructing complex drug molecules. Commonly employed in the preparation of protease inhibitors, receptor antagonists, and other bioactive compounds where controlled polarity and solubility are important. Also utilized in research settings for library synthesis in drug discovery due to its stability and reactivity profile.