维生素B12
中文同义词: 氰基钴胺;维生素B12;维生素Z12;氰钴胺VB12;维生素乙B12;维他命B12;维生素B12 标准品;钴胺素
化学性质 无臭无味。熔点210~220℃(碳化变黑)。1g本品可溶于80mL水,溶于乙醇,不溶于丙酮、乙醚或氯仿。无水物易吸潮,结晶性氰钴胺在中性和微酸性溶液中对空气和热稳定性较好,在碱性、强酸及还原剂中不太稳定,不耐光和紫外线。
用途 维生素B12缺乏会导致贫血、神经系统障碍。可用于婴幼儿食品,使用量为10~30μg/kg;在强化饮液中使用量为2~6μg/kg。
用途 主要用于治疗巨幼红细胞贫血、营养性不良、失血性贫血、神经痛及障碍性疾患
用途 作为饲料营养强化剂,具有抗贫血的作用,对恶性贫血、营养性贫血、寄生虫性贫血均有效用量15-30mg/t。
用途 维生素B12是人体组织代谢过程中所必需的维生素。人体内维生素B12的平均总量为2-5mg,其中50-90%贮存于肝脏内,在机体需要时,释放入血液中形成红细胞。长期缺乏B12会导致恶性贫血。B12及叶酸是细胞合成核酸过程中的重要畏酶,参与合成嘌呤、嘧啶、核酸和蛋氨酸等;并可使甲基转移,而促进但碱的合成;同时可增加糖地元的合成,从而有消除肝脏脂的作用。临床常作为治疗肝病的药物。人体每天约需维生素B121微克,每天食物中能提供2微克,即可保证正常的需要。维生素B12中的羟钴素可与氰化物反应,生成氰钴酸,从而能消除氰化物的毒性。因此,维生素B12缺乏者对氰化物的敏感性比一般人高。维生素B12主要用于治疗恶性贫血、巨幼红细胞贫血、抗叶酸药起起的贫血和多发性神经炎等。
Cyanocobalamin
Synonym: 5,6-dimethyl-1-(3-o-phosphono-alpha-d-ribofuranosyl)-1h-benzimidazolmonoes;5,6-dimethylbenzimidazolylcobamidecyanide;5,6-dimethylbenzimidazolyl-co-cyanocobamide;alpha-5,6-dimethyl-1h-benzimidazolyl-cobamidcyanide;anacobin;berubigen;betalin-12;betalin12crystalline
CAS: 68-19-9
MF: C63H88CoN14O14P
MW: 1355.37
EINECS: 200-680-0
Assay: 98%
Appearance: white powder
Specification: CP
Chemical Property: Odorless and tasteless. The melting point of 210 to 220 DEG C (carbon black). 1g this product is soluble in 80mL water, soluble in ethanol, insoluble in acetone, ether or chloroform. Anhydrous hygroscopic, crystalline cyanocobalamin in neutral and slightly acidic solutions to air and good thermal stability, reducing agent is not stable in alkaline, acidic and, not light and ultraviolet.
Usage:
1. Mainly used for the treatment of megaloblastic anemia, malnutrition, nutritional blood barrier anemia, pain and nerve disorders
2. As the feed nutrition fortifier, has the role of anti anemia, pernicious anemia, nutritional anemia, parasitic anemia are effective dosage of 15-30mg/t.
3. Vitamin B12 deficiency can lead to anemia, nervous system disorders. Can be used in foods for infants and young children, with 10 ~ 30 μ g/kg; to strengthen drinking liquid using the weight of 2 ~ 6 μ g/kg.
4. Clinical often as a drug for treatment of liver disease. The body needs vitamin B121 micrograms per day, every day food can provide 2 micrograms, can guarantee the normal needs. Hydroxy cobalt in vitamin B12 hormone reacts with cyanide, generation of cyanocobalamin, so as to eliminate cyanide toxicity.
Package: 1kg/foil bag
Price: USD 2610/kg
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