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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F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
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Filing date
Publication date
Application filed by F Hoffmann La Roche AGfiledCriticalF Hoffmann La Roche AG
Priority to ES0219669ApriorityCriticalpatent/ES219669A1/es
Publication of ES219669A1publicationCriticalpatent/ES219669A1/es
Polysaccharides And Polysaccharide Derivatives
(AREA)
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Abstract
Procedimiento para la preparación de ésteres quitosan-polisulfúricos, que contienen grupos N-formilo, con un contenido en formilo de 1.5 a 9%, caracterizado porque se transforma quitosana en una sal, porque se disuelve esta última en formamida y porque se hace reaccionar ácido cloro sulfónico con esta solución.
ES0219669A1955-01-211955-01-21UN PROCEDIMIENTO PARA LA PREPARACIoN DE ÉSTERES QUISOTáN-POLISULFuRICOS
ExpiredES219669A1
(es)