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.)
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Ferrer Internacional SA
Original Assignee
Ferrer Internacional SA
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Filing date
Publication date
Application filed by Ferrer Internacional SAfiledCriticalFerrer Internacional SA
Priority to ES442704ApriorityCriticalpatent/ES442704A2/en
Publication of ES442704A2publicationCriticalpatent/ES442704A2/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Improvements in the object of the patent of invention no. 437,466 which refers to "procedure for obtaining pyrazole derivatives" of formulas: ** (see formula) ** Characterized in that the process of separation of the mixture, of the compounds ib and ii obtained as claimed in the main patent, is carried out by acidification with hydrochloric acid, under stirring, crystallization of compound ii by cooling and separation of compound ib from the solution hydrochloride by neutralization, extraction with benzene and vacuum distillation. (Machine-translation by Google Translate, not legally binding)
ES442704A1975-11-171975-11-17Procedure for obtaining pirazol derivatives. (Machine-translation by Google Translate, not legally binding)
ExpiredES442704A2
(en)
Procedure for the preparation of 6-aminopenicilanico or 7-aminodexacetoxicefalosporanico ácidos derivados. (Machine-translation by Google Translate, not legally binding)
10-Bromosandwicine and 10-bromoisosandwicine, as well as their additions salts with pharmacolical acceptable acids process for their preparation and their use.