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Fremgangsmaade til fremstilling af 7-oxo-4-thia-1-aza-bicyclo(3,2,0)heptanderivater eller estere eller salte deraf samt mellemprodukter ved fremgangsmaaden
Processo per la preparazione di acido i aminobenzen 4 e 5 b solfatoetilsolfon 2 solfonico e dei corrispondenti composti ossietil solfonilico e vinilsolfonilico
Processo para preparacao de esteres de acido 2-ciano-3,3-dimetil-ciclopropano-1-carboxilico e processo para preparacao de esteres de acido 3-halogeneo-3-ciano-2,2-dimetilpropano-1-carboxilico