Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) where protection of the piperidine nitrogen is required. The Boc (tert-butoxycarbonyl) group allows for selective protection during peptide coupling or heterocyclic assembly, while the methyl ester offers a handle for hydrolysis or nucleophilic substitution. Commonly employed in medicinal chemistry for constructing kinase inhibitors, CNS agents, and other bioactive molecules containing substituted piperidine scaffolds. Its stability under various reaction conditions makes it suitable for multi-step synthetic sequences.