Used in pharmaceutical synthesis as a protected amine building block, particularly in the development of active pharmaceutical ingredients (APIs). The Boc group protects the piperidine nitrogen, allowing selective reactivity at the 3-amino position and enabling controlled coupling reactions in multi-step syntheses. Commonly employed in the preparation of kinase inhibitors, CNS-active compounds, and other bioactive molecules where the piperidine scaffold is required. Its stability under various reaction conditions makes it suitable for use in combinatorial chemistry and parallel synthesis.