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Expired
Application number
GB16688/35A
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F Hoffmann La Roche AG
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F Hoffmann La Roche AG
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Publication date
Application filed by F Hoffmann La Roche AGfiledCriticalF Hoffmann La Roche AG
Publication of GB439935ApublicationCriticalpatent/GB439935A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Aqueous solutions of 4 : 4<1>-dihydroxy-3 : 3<1>-diamino-arsenobenzene and its derivatives are stabilized by the addition of ascorbic acid or its salts. The examples describe the addition of ascorbic acid and its sodium salt respectively to solutions of sodium 4 : 4<1>-dihydroxy-3 : 3<1>-diamino-arsenobenzene-methy-lenesulphonate.
GB16688/35A1934-07-061935-06-08Process for the manufacture of stable solutions of dihydroxy-diamino-arsenobenzene and its derivatives
ExpiredGB439935A
(en)