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Application filed by Horst KuenzelfiledCriticalHorst Kuenzel
Priority to CS831290ApriorityCriticalpatent/CS246577B1/cs
Publication of CS129083A1publicationCriticalpatent/CS129083A1/cs
Publication of CS246577B1publicationCriticalpatent/CS246577B1/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.