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Merck
CN

H3784

Sigma-Aldrich

HEPES钠盐 钠盐

BioPerformance Certified, suitable for cell culture, ≥99.0%

别名:

4-(2-羟乙基)哌嗪-1-乙磺酸 钠盐, N-(2-羟乙基)哌嗪-N′-(2-乙磺酸) 钠盐

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About This Item

经验公式(希尔记法):
C8H17N2NaO4S
CAS号:
分子量:
260.29
EC 号:
MDL编号:
UNSPSC代码:
12161700
PubChem化学物质编号:
NACRES:
NA.25

等级

BioPerformance Certified

质量水平

检测方案

≥99.0%

形式

powder

储存条件

dry at room temperature

技术

activity assay: suitable
cell culture | mammalian: suitable

杂质

endotoxin and total aerobic microbial count, tested

颜色

white

pH值(酸碱度)

10-12 (1 M in water)

有效pH范围

6.8-8.2

pKa (25 °C)

7.5

溶解性

water: 0.1 M, clear, colorless

密度

1.19 g/cm3 at 20—25 °C
1.21 g/cm3 at 20—25 °C

吸光度

≤0.02 at 280 in H2O at 0.1 M
≤0.04 at 260 in H2O at 0.1 M

适用性

suitable for component for culture media
suitable for molecular biology

应用

cell analysis
diagnostic assay manufacturing
general analytical
life science and biopharma

异质活性

DNase, RNase, NICKase, protease, none detected

SMILES字符串

[Na+].OCCN1CCN(CC1)CCS([O-])(=O)=O

InChI

1S/C8H18N2O4S.Na/c11-7-5-9-1-3-10(4-2-9)6-8-15(12,13)14;/h11H,1-8H2,(H,12,13,14);/q;+1/p-1

InChI key

RDZTWEVXRGYCFV-UHFFFAOYSA-M

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一般描述

HEPES也称4-(2-羟乙基)哌嗪-1-乙烷磺酸,它是一种两性离子的N取代氨基磺酸缓冲液,在6.8-8.2的范围内(25°C下pKa 为 7.48 )具有良好的pH缓冲能力。由于其公认的多功能性,HEPES 在细胞生物学、生物化学和生物学研究中得到广泛应用。特别值得一提的是,它不与金属离子反应,这一点使其成为含金属离子的溶液的首选试剂,在溶液中可作为“非配位缓冲液”。

在细胞培养中,即使在变化的二氧化碳浓度下HEPES 也能维持稳定的生理pH,其功效优于碳酸氢盐缓冲液(NaHCO3)。此外,HEPES在各种生物学和生物化学过程中展现出了重要特性,例如等电聚集蛋白质分离、对DNA限制酶反应的干扰极小,这些特性使其成为各种研究应用(包括免疫沉淀、细胞裂解和活细胞成像)中不可缺少的试剂。由于其多功能性、突出的缓冲能力、与分子的相互反应极少,HEPES成为各种研究领域的关键工具。

应用

HEPES 钠盐已被用于:
  • HSOF培养基的补充剂
  • 作为卵和胚胎培养中HCZB 培养基的缓冲液成分
  • 作为细胞培养中的缓冲液成分

特点和优势

  • 用于生物化学和生物学研究的高纯度产品
  • 经测试证实重金属污染浓度低,从而确保其适用于各种应用
  • 易溶于水,适用pH 范围为 6.8 - 8.2,25 °C下pKa 为7.5
  • 适用于细胞培养
  • 测定了内毒素和好氧微生物总数
  • 不含DNA酶、切口酶、RNA酶、核酸内切酶、核酸外切酶和蛋白酶

外形

冻干、喷雾干燥或结晶的材料。

其他说明

如需了解生化试剂系列的更多信息,请填写此表

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)


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British journal of pharmacology, 166(8), 2402-2416 (2012-03-29)
Artificial buffers such as HEPES are extensively used to control extracellular pH (pH(e) ) to investigate the effect of H(+) ions on GABA(A) receptor function. In neurones cultured from spinal cord dorsal horn (DH), dorsal root ganglia (DRG) and cerebellar

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