Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
Ciba AG
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Filing date
Publication date
Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Publication of ES213744A1publicationCriticalpatent/ES213744A1/en
Procedure for obtaining new pyridazines, characterized in that on the pyridazines of the formula **FORMULA** where X and X1 signify reactable esterified oxygroups and R1 and R2 hydrogen, low alkyl residues, or halogen atoms, alcoholates, respectively phenolates, especially of the alkali metals, of aliphatic, aromatic or araliphatic oxy-compounds are allowed to react in such a way that the transformation of the esterified reactable oxygroups is carried out in one time or in stages. (Machine-translation by Google Translate, not legally binding)
ES0213744A1953-03-021954-02-17A procedure for obtaining new pyridacins (Machine-translation by Google Translate, not legally binding)
ExpiredES213744A1
(en)