Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of active pharmaceutical ingredients (APIs) where protection of the amine group is required. The Boc (tert-butoxycarbonyl) group provides reversible amine protection during multi-step syntheses, while the mesylate (methanesulfonate) group acts as a good leaving group, enabling nucleophilic substitution reactions. Commonly employed in the preparation of piperidine-based drug candidates, including those targeting central nervous system disorders and other therapeutic areas requiring nitrogen-containing heterocycles. Its structure allows for selective functionalization at specific positions, making it valuable in medicinal chemistry for building complex molecules with high purity and yield.