Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of central nervous system (CNS) agents. Its piperidine backbone with a protected amine group (Boc) and 4-methyl substitution makes it valuable in medicinal chemistry for constructing bioactive molecules. The ethynyl group at the 4-position allows for further functionalization via click chemistry or coupling reactions, enabling rapid diversification during drug discovery. The geminal substitution at C4 provides essential steric bulk. Commonly employed in the preparation of receptor modulators and enzyme inhibitors where nitrogen-containing rings are required for activity.