1-phenyl-2-(piperidin-1-yl)ethanone-1,2-dione

N-benzoyl-2-piperidinecarboxaldehyde

1-苯并哌啶-2-羧酸

1-<(piperidin-1-ylcarbonyl)carbonyl>piperidine

1,1,3,3-四甲基脲