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.)
Expired
Application number
GB4136158A
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.)
Shionogi and Co Ltd
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Shionogi and Co Ltd
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Filing date
Publication date
Application filed by Shionogi and Co LtdfiledCriticalShionogi and Co Ltd
Publication of GB898685ApublicationCriticalpatent/GB898685A/en
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Abstract
The invention comprises (a) Vitamin B1 bromide hydrochloride and iodide hydrochloride; (b) the preparation of Vitamin B1 chloride, bromide or iodide by reacting Vitamin B1 chloride hydrochloride, chloride hydrobromide, bromide hydrobromide or bromide hydrochloride, with at least 2 molecular proportions of an alkali metal hydroxide, carbonate or bicarbonate in an aqueous medium, adding an alkali metal chloride (except when the starting material contains bromine), bromide or iodide to the resulting solution, and adjusting the pH thereof to approximately 6 with an alkali metal hyposulphite or thiosulphate or a weak organic acid; and (c) the preparation of a Vitamin B1 halide hydrohalide in which the two halogens are different (neither of them being fluorine) by reacting Vitamin B1 chloride, bromide (or its hydrate) or iodide (or its hydrate) with the appropriate hydrogen halide.
GB4136158A1957-12-291958-12-22Vitamin b halides and process for the preparation thereof
ExpiredGB898685A
(en)
A procedure to separate the ions k and mg from a double salt that contains them, eventually mixed with sodium salts (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of a chlorated trisodic phosphate with high content in sodium hypochlorite (Machine-translation by Google Translate, not legally binding)