N-Carbethoxy-4-piperidone (CAS: 29976-53-2) is a piperidone-based organic intermediate widely used in pharmaceutical and fine chemical synthesis.

It contains a piperidone ring with a carbethoxy (ethyl carbamate) protecting group on the nitrogen, which makes it valuable for stepwise synthesis of more complex nitrogen-containing molecules, especially in medicinal chemistry and API (active pharmaceutical ingredient) development.