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维生素B12

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产品名称: 维生素B12
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维生素B12


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维生素B12
中文名称: 维生素B12
其他中文名称: 维生素乙12;氰钴胺;维他命B12;氰基钴胺;钴胺素
英文名称: VB12
其他英文名称: Cyanocobalamin;Vitamin B12;Cyanocob(III)alamin;α-(5,6-Dimethylbenzimidazolyl)cyanocobamide
产品规格: BR,98%
包装:1克/5克/25克
CAS号:68-19-9
C63H88CoN14O14P=1355.38
维生素B12级别:BR
含量:≥98.0%
鉴别:合格
干燥失重:≤12.0%
有关物质:≤3.0%
性状:深红色结晶粉末。无臭味,无味,对光敏感。有吸湿性,在空气中能吸收12%水分。其含水结晶在空气中稳定。210~220℃时色变深,300℃不熔化。其水溶液呈中性,在pH 4.5~5时*稳定。1g溶于约80ml水,溶于乙醇,不溶于丙酮、氯仿和乙醚。 比旋光度-59°±9°(稀水溶液中)。*大吸收波长(水中)278、361、550nm(A1%1cm 115、204、64)。*小致死量(大鼠,腹腔)1364mg/kg
用途:生化研究。组织培养
维生素B12保存:2~8℃,避光
 

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