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46067

Sigma-Aldrich

溴化乙啶 溶液

for fluorescence, ~1% in H2O

同義詞:

3,8-二氨基-5-乙基-6-苯基菲啶溴化物, EtBr, 胡米溴铵

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About This Item

經驗公式(希爾表示法):
C21H20BrN3
CAS號碼:
分子量::
394.31
Beilstein:
3642536
MDL號碼:
分類程式碼代碼:
12161505
PubChem物質ID:
NACRES:
NA.32

等級

for fluorescence

濃度

~1% in H2O

螢光

λex 480 nm; λem 620 nm in H2O
λex 518 nm; λem 605 nm (bound to DNA)
λex 530 nm; λem 600 nm in 50 mM phosphate buffer pH 7.0 (upon binding to DNA)

儲存溫度

2-8°C

SMILES 字串

[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

InChI 密鑰

ZMMJGEGLRURXTF-UHFFFAOYSA-N

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應用

溴化乙啶 (EtBr) 为聚丙烯酰胺凝胶电泳或琼脂糖凝胶电泳中最常用的核酸染料。EtBr 在结合到双链 RNA 上时其荧光可提高 21 倍,在结合到双链 DNA 上可提高 25 倍,从而使得在低染料浓度 (10μg/ml) 下无需背景脱色。溴化乙啶已用于核酸的许多荧光分析。已表明它可结合到单链 DNA(虽然强度不高)和三链 DNA 上。由于 EtBr 能够结合到 DNA 上,因此它是 DNA 聚合酶的抑制剂。

生化/生理作用

溴化乙啶可插入双链 DNA 和 RNA 中,并作为移码诱变剂。它还可与吖啶橙结合用于区分存活的、凋亡的和坏死的细胞。

重構

对于在电泳后进行凝胶染色,应先用水将储存液样品稀释到 0.5μg/ml,再将凝胶孵育 15-30 分钟。通常无需脱色,但是如果必须降低背景色,则可在水中脱色 15 分钟。然后可在紫外灯箱(254nm 波长)中检测 DNA 条带。也可将溴化乙啶加到凝胶和电泳缓冲液(终浓度 0.5μg/ml)中,并在电泳后立即显影。

相關產品

產品號碼
描述
訂價

象形圖

Skull and crossbonesHealth hazard

訊號詞

Danger

危險聲明

危險分類

Acute Tox. 3 Inhalation - Muta. 2

儲存類別代碼

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

水污染物質分類(WGK)

nwg

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter


分析證明 (COA)

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