Vitamin B12 - CAS:68-19-9

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Vitamin B12 (Synonyms:维生素B12; Cyanocobalamin)

目录号 : KM12179 CAS No. : 68-19-9 纯度 : 98%

Data Sheet 产品使用指南

Vitamin B12 是一种维生素，在维持脑、神经系统正常功能和血流形成等方面发挥关键作用。

规格	价格	是否有货
500mg		In-stock
1g	询价	In-stock
5g	询价	In-stock

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生物活性

Vitamin B12 is a vitamin. Vitamin B12 plays a key role in the normal functioning of the brain and nervous system, and for the formation of blood.

体外研究

Vitamin B12 is one of the eight B vitamins. It is normally involved in the metabolism of every cell of the human body, especially affecting DNA synthesis and regulation, but also fatty acid synthesis (especially odd chain fatty acids) and energy production. However, many (though not all) of the effects of functions of B12 can be replaced by sufficient quantities of folic acid (vitamin B9), since B12 is used to regenerate folate in the body. Most vitamin B12 deficiency symptoms are actually folate deficiency symptoms, since they include all the effects of pernicious anemia and megaloblastosis, which are due to poor synthesis of DNA when the body does not have a proper supply of folic acid for the production of thymine due to methyl trapping. When sufficient folic acid is available, all known B12 related deficiency syndromes normalize, save those narrowly connected with the vitamin B12-dependent enzymes Methylmalonyl Coenzyme A mutase, and 5-methyltetrahydrofolate-homocysteine methyltransferase (MTR), also known as methionine synthase; and the buildup of their respective substrates (methylmalonic acid, MMA) and homocysteine.Coenzyme B12's reactive C-Co bond participates in three main types of enzyme-catalyzed reactions.

分子式

C₆₃H₉₂CoN₁₃O₁₄P

分子量

1355.37

CAS号

68-19-9

中文名称

维生素B12

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

2-8˚C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

溶解性数据

In Vitro:

DMSO : 20.83 mg/mL (15.37 mM; ultrasonic and warming and heat to 60°C)

H₂O : 6.25 mg/mL (4.61 mM; ultrasonic and warming and heat to 60°C)

配制储备液

浓度溶剂体积质量	1 mg	5 mg	10 mg

1 mM	0.7378 mL	3.6890 mL	7.3781 mL
5 mM	0.1476 mL	0.7378 mL	1.4756 mL
10 mM	0.0738 mL	0.3689 mL	0.7378 mL

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month (protect from light)。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用；以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

1.

请依序添加每种溶剂： PBS

Solubility: 50 mg/mL (36.89 mM); Clear solution; Need ultrasonic
2.

请依序添加每种溶剂： 10% DMSO → 40% PEG300 → 5% Tween-80 → 45% saline

Solubility: ≥ 2.5 mg/mL (1.84 mM); Clear solution

此方案可获得 ≥ 2.5 mg/mL (1.84 mM，饱和度未知) 的澄清溶液。

以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。
3.

请依序添加每种溶剂： 10% DMSO → 90% (20% SBE-β-CD in saline)

Solubility: ≥ 2.5 mg/mL (1.84 mM); Clear solution

此方案可获得 ≥ 2.5 mg/mL (1.84 mM，饱和度未知) 的澄清溶液。

以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

临床试验

科研文献

纯度： 98%

Data Sheet

产品使用指南

摩尔计算器
稀释计算器

The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

质量

浓度

体积

分子量*

重置计算

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
This equation is commonly abbreviated as: C1V1 = C2V2

浓度

体积

浓度

体积

重置计算

Other Forms of Rapamycin:

KKL 顾客使用本产品发表的 2 篇科研文献

The molarity calculator equation

The dilution calculator equation