完善个人信息 close
取消
溴化乙啶
基本信息
性质
用途
安全信息
编辑结构
溴化乙啶
CAS No. 1239-45-8
分子式 C21H20BrN3
分子量 394.32
英文名称 Ethidium bromide
中文同义词 溴化乙腚;溴化-3,8-二氨基-5-乙基-6-苯基菲啶翁;溴化乙啶;溴化乙啶/溴乙菲啶;溴化乙啶(EB);溴化乙锭, 98%(DRY WT.);胡米溴铵;EB,溴化乙啶
基本信息
产品名称
溴化乙啶
中文同义词
溴化乙腚,溴化-3,8-二氨基-5-乙基-6-苯基菲啶翁,溴化乙啶,溴化乙啶/溴乙菲啶,溴化乙啶(EB),溴化乙锭, 98%(DRY WT.),胡米溴铵,EB,溴化乙啶
英文名称
Ethidium bromide
英文同义词
3,8-diaMino-5-ethyl-6-phenylphenanthridin-5-iuM broMide;EthidiuM broMide dropper bottle,5Ml;2,7-Diamino-10-ethyl-9-phenylphenanthridinium bromide, 1% aqueous solution;Ethidinium bromide, 3,8-Diamino-5-ethyl-6-phenylphenanthridinium bromide;EthidiuM BroMide, OMniPur(R);EthidiuM broMide, pure, 95% 1GR;EthidiuM broMide, pure, 95% 5GR;Dromilac
CAS No.
1239-45-8
分子式
C21H20BrN3
分子量
394.32
EINECS号
214-984-6
MDL NO.
MFCD00011724
性质
BRN
3642536
Merck
14,4731
密度
1.3739 (rough estimate)
形态
powder
熔点
260-262 °C (dec.)(lit.)
闪点
>100°C
颜色
Red to dark purple
折射率
1.6700 (estimate)
储存条件
2-8°C
水溶解性
40 g/L (25 ºC)
气味 (Odor)
Odorless solid
溶解度
H2O: 10 mg/mL, opaque, strongly red
稳定性
Stable. Incompatible with strong oxidizing agents.
主要应用
Electroluminescent displays;photoresists
CAS 数据库
1239-45-8(CAS DataBase Reference)
生物领域应用
Nucleic acid hybridization; detecting nucleic acids,cells,cancer cells,human cytomegalovirus,hydrogenase A (hydA) of Clostridia,influenza A virus,oligonucleotides,viable Plesiomonas shigelloides; apoptosis assay; nucleic acid quantification
最大波长(λmax)
518 nm, 210 nm, 285 nm, 316 nm, 343 nm, 480 nm, 525 nm
EPA化学物质信息
Phenanthridinium, 3,8-diamino-5-ethyl-6-phenyl-, bromide (1239-45-8)
用途
用途
Ethidium bromide (EtBr) is the most commonly used nucleic acid stain for PAGE or agarose gel electrophoresis. The fluorescence of EtBr increases 21-fold upon binding to double-stranded RNA and 25-fold on binding double-stranded DNA so that destaining the background is not necessary with a low stain concentration. Ethidium bromide has been used in a number of fluorimetric assays for nuc leic acids. It has been shown to bind to single-stranded DNA (although not as strongly) and triple-stranded DNA. Because of its ability to bind to DNA, EtBr is an inhibitor of DNA polymerase. Antiprot ozoal (Trypanosoma).
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.
生物活性
Ethidium Bromide (Homidium bromide, EtBr, EB) 是一种嵌入剂,与DNA碱基对类似。EtBr在分子生物学实验技术(如琼脂糖凝胶电泳)中经常被用于荧光标记(核酸染色)。
荧光探针技术中的荧光探剂
溴化乙啶(简称EB)是目前在紫外线下观察DNA而常用的一种荧光染料,属于插入染料,原因是它有多环结构,这种结构使它能够插入核苷酸碱基之间。由于核酸和碱基的荧光量子产率很低,因此利用天然荧光检测核酸比蛋白质困难更大,所以荧光探针技术在核酸研究中显得尤为重要。比较常用的是溴化乙啶(et-hidium bromide或称菲啶溴红),它与核酸 (DNA、RNA、双链多聚核苷酸)有特异结合的能力。它对脱氧核糖核酸的最低检测量可达10ng/ml,而且它与核酸的双链区结合是专一的,利用它与各种构象核酸结合比例的不同所产生的荧光强度的变化,可以把各种构型核酸加以区分。例如它能鉴别天然核酸和变性核酸,区分线性DNA、环状DNA和超级线团DNA等。此外各种吖啶,包括吖啶橙、吖啶黄以及前黄素等都是核酸常用的探剂。 荧光分析法可分为直接测定法和间接测定法二种。直接测定法是利用物质自身发射的荧光,即所谓“自荧光”或“内源荧光”来进行测定。但在自然界中只有少部分物质在光激发后可以发射荧光,而有相当一部分物质发荧光很弱或不发射荧光,如蛋白和核酸就是发荧光很弱的物质。为了充分利用荧光分析法灵敏度高这一特点就需使其转化成荧光物质再进行测定。此时可用某些试剂(如荧光染料) 使其与荧光较弱或不显荧光的物质共价或非共价结合,以形成发荧光的结合物再进行测定,这就是所谓的“荧光探针”技术或“荧光标记”技术。使试剂(荧光剂) 吸附在大分子上或共价结合到大分子上。所用的染料溴化乙啶被叫做“荧光探剂”。探剂荧光特性的变化,实际上是由于大分子构象的变化所引起的探剂环境变化的信号,所以利用这种信号还可以得到大分子构象变化的信息。
安全信息
F
8-9
RTECS号
SF7950000
WGK Germany
3
包装类别
I
危险等级
6.1
海关编码
危险品标志
危险类别码
危险品运输编号
UN 2811 6.1/PG 1
毒性
Intercalating dye widely used to stain DNA in gels and gradients. The DNA can be visualized readily by irradiation with ultraviolet light, as little as 0.5 μg of DNA being detectable by such methods. Ethidium bromide is also added to cesium chloride density gradients, since as an intercalating molecule it binds more readily to linear DNA than to closed collinear circles of DNA (such as plasmids). Binding of ethidium bromide reduces the density of DNA, thus covalent circles of DNA have higher densities at saturating concentrations of ethidium bromide, permitting the separation of plasmid DNA. Ethidium bromide is a putative carcinogen.
毒害物质数据
1239-45-8(Hazardous Substances Data)
编辑结构
13986034860 027-59106191
中文名称:
溴化乙啶
英文名称:
Ethidium bromide
CAS NO.:
1239-45-8
联系我们:
QQ
QQ号: 1400828855 复制
微信
微信洽谈
15107168801 027-59223025
中文名称:
溴化乙啶
英文名称:
Ethidium bromide
CAS NO.:
1239-45-8
联系我们:
QQ
QQ号: 1718480011 复制
微信
微信洽谈
15623179893
中文名称:
溴化乙啶
英文名称:
Ethidium bromide
CAS NO.:
1239-45-8
信息错误报告 1239-45-8
清空
提交