title: Transformations of penicillins: reactions of secopenicillanic acid derivatives with ethyl N-chloro-N-sodiocarbamate.
mesh_terms: D002219:Carbamates; D055598:Chemical Phenomena; D002621:Chemistry; D010397:Penicillanic Acid
chemical_list: D002219:Carbamates; D010397:Penicillanic Acid