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Application filed by Valentin S Markov, Vilnis J AuzinfiledCriticalValentin S Markov
Priority to CS83338ApriorityCriticalpatent/CS245297B1/cs
Publication of CS33883A1publicationCriticalpatent/CS33883A1/cs
Publication of CS245297B1publicationCriticalpatent/CS245297B1/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.