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09-0617

Sigma-Aldrich

Ethidium bromide solution

10 mg/mL

Sinônimo(s):

3,8-Diamino-5-ethyl-6-phenylphenanthridinium bromide, EtBr, Homidium bromide

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About This Item

Fórmula empírica (Notação de Hill):
C21H20BrN3
Número CAS:
1239-45-8
Peso molecular:
394.31
Beilstein:
3642536
Número MDL:
MFCD00011724
Código UNSPSC:
12161505
ID de substância PubChem:
329748667

forma

liquid

disponibilidade

available only in Japan

concentração

10 mg/mL

cadeia de caracteres SMILES

[Br-].CC[n+]1c(-c2ccccc2)c3cc(N)ccc3c4ccc(N)cc14

InChI

1S/C21H19N3.BrH/c1-2-24-20-13-16(23)9-11-18(20)17-10-8-15(22)12-19(17)21(24)14-6-4-3-5-7-14;/h3-13,23H,2,22H2,1H3;1H

chave InChI

ZMMJGEGLRURXTF-UHFFFAOYSA-N

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Aplicação

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 (10 μg/ml). Ethidium bromide has been used in a number of fluorimetric assays for nucleic 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.

Ações bioquímicas/fisiológicas

Ethidium bromide intercalates double-stranded DNA and RNA and acts as a frameshift mutagen. It can also be used in conjunction with acridine orange to differentiate between viable, apoptotic and necrotic cells.

Adequação

for biological purposes

Reconstituição

For staining a gel after electrophoresis, dilute a sample of the stock solution to 0.5 μg/ml with water and incubate the gel for 15-30 min. Destaining is usually not needed but can be carried out in water for 15 min if decreased background is necessary. The DNA bands can then be detected on a UV light box (254 nm wavelength). Ethidium bromide can also be incorporated into the gel and running buffer at 0.5 μg/ml and visualized immediately after electrophoresis.

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Pictogramas

Skull and crossbonesHealth hazard
GHS06,GHS08

Palavra indicadora

Danger

Frases de perigo

H331,H341

Classificações de perigo

Acute Tox. 3 Inhalation - Muta. 2

Código de classe de armazenamento

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

Classe de risco de água (WGK)

nwg

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

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