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Ethidium bromide (Synonyms:EtBr; Homidium bromide)
目录号 : KM13234 CAS No. : 1239-45-8 纯度 : 98%

Ethidium bromide 常用作分子生物实验学中的荧光标记(核酸染色),如琼脂糖凝胶电泳。

规格 价格 是否有货 数量
250mg
In-stock
500mg 询价 In-stock
1g 询价 In-stock

Other Forms of Rapamycin:

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生物活性

Ethidium bromide is an intercalating agent commonly used as a fluorescent tag (nucleic acid stain) in molecular biology laboratories for techniques such as agarose gel electrophoresis.

体外研究

Guidelines (Following is our recommended protocol. This protocol only provides a guideline, and should be modified according to your specific needs).
The preparation of agarose gel:
1. Agarose gels are commonly used in concentrations of 0.5% to 2.5% depending on the size of bands needed to be separated.
2. Mix the agarose powder with 1X TAE/TBE.
3. Microwave for 1-3 min until the agarose is completely dissolved (Caution: not overboil).
4. Make the solution cool down before solidification.
5. Add ethidium bromide (EtBr) to a final concentration of approximately 0.2-0.5 μg/mL (Stocks are generally 10 mg/ml, and require 5 µL stock/100 mL gel).
6. Ethidium bromide binds to the DNA and you could visualize the DNA under ultraviolet (UV) light.
CAUTION: EtBr is a known mutagen. Please pay attention to strengthening protection.

分子式
C21H20N3+.Br-
分子量
394.31
CAS号
1239-45-8
中文名称
溴化乙啶
运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

4°C, protect from light

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

溶解性数据
In Vitro: 

H2O : ≥ 100 mg/mL (253.61 mM)

DMSO : 25 mg/mL (63.40 mM; Need ultrasonic)

* "≥" means soluble, but saturation unknown.

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 2.5361 mL 12.6804 mL 25.3608 mL
5 mM 0.5072 mL 2.5361 mL 5.0722 mL
10 mM 0.2536 mL 1.2680 mL 2.5361 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: 10% DMSO    40% PEG300    5% Tween-80    45% saline

    Solubility: ≥ 2.08 mg/mL (5.28 mM); Clear solution

    此方案可获得 ≥ 2.08 mg/mL (5.28 mM,饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例,取 100 μL 20.8 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。

  • 2.

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

    Solubility: ≥ 2.08 mg/mL (5.28 mM); Clear solution

    此方案可获得 ≥ 2.08 mg/mL (5.28 mM,饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例,取 100 μL 20.8 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。

The molarity calculator equation
Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)
The dilution calculator equation
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
This equation is commonly abbreviated as: C1V1 = C2V2
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