Translations:Cyanocobalamin/16/en: Difference between revisions

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Message definition (Cyanocobalamin)
{{chem|B|12r}} and {{chem|B|12s}} can be prepared from cyanocobalamin by controlled potential reduction, or chemical reduction using [[sodium borohydride]] in alkaline solution, [[zinc]] in [[acetic acid]], or by the action of [[thiols]]. Both {{chem|B|12r}} and {{chem|B|12s}} are stable indefinitely under oxygen-free conditions. {{chem|B|12r}} appears orange-brown in solution, while {{chem|B|12s}} appears bluish-green under natural daylight, and purple under artificial light.

B
12r and B
12s can be prepared from cyanocobalamin by controlled potential reduction, or chemical reduction using sodium borohydride in alkaline solution, zinc in acetic acid, or by the action of thiols. Both B
12r and B
12s are stable indefinitely under oxygen-free conditions. B
12r appears orange-brown in solution, while B
12s appears bluish-green under natural daylight, and purple under artificial light.

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