3-ethoxyacryloyl isocyanate

(+/-)-(1β,3β,4β)-4-acetoxy-4-carbamoylcyclopentanedicarboxylic acid

(1S,3R,4S)-3-羟基-4-(羟基甲基)环戊烷甲酰胺

methyl 2-acetyloxy-4-carbamoylcyclopentane-1-carboxylate