Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) containing piperidine or substituted piperidine rings. Its protected dihydropyridine structure allows selective reactivity, making it valuable in multi-step organic syntheses, especially in medicinal chemistry for constructing nitrogen-containing heterocycles. Commonly employed in the preparation of kinase inhibitors, CNS agents, and other bioactive molecules where controlled ring formation and functional group compatibility are critical.