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Application filed by Rudolf VavrofiledCriticalRudolf Vavro
Priority to CS836527ApriorityCriticalpatent/CS239167B1/cs
Publication of CS652783A1publicationCriticalpatent/CS652783A1/cs
Publication of CS239167B1publicationCriticalpatent/CS239167B1/cs
Procedimiento para preparar derivados del acido 7beta-(carboxialquenoilamino)-(1-o,1-5 o 1-50)-3 cefem-4- carboxilico, y los intermediarios de aplicacion exclusiva en dicho procedimiento.