H23830

HEPES

≥99% (titration), crystalline, reagent grade

• 別名: 4-(2-ヒドロキシエチル)ピペラジン-1-エタンスルホン酸, N-(2-ヒドロキシエチル)ピペラジン-N′-(2-エタンスルホン酸)
• 実験式（ヒル表記法）: C₈H₁₈N₂O₄S
• CAS番号: 7365-45-9
• 分子量: 238.30
• Beilstein: 883043
• MDL番号: MFCD00006158
• UNSPSCコード: 12161700
• NACRES: NA.25

特性

• 製品名: HEPES, reagent grade, ≥99% (titration), crystalline
• 由来生物: synthetic
• 品質水準: 200
• グレード: reagent grade
• アッセイ: ≥99% (titration)
• フォーム: crystalline
• 保管条件: (Tightly closed. Dry)
• 不純物: ≤1% water
• 色: white
• 有効pH範囲: 6.8-8.2
• pKa (25 °C): 7.5
• mp: 212.6 °C
• 溶解性: water: 1 M, clear, colorless
• 密度: 1.44 g/cm³ at 20 °C
• 微量陽イオン: Fe: <5 ppm
• 保管温度: room temp
• SMILES記法: OCCN1CCN(CC1)CCS(O)(=O)=O
• InChI: 1S/C8H18N2O4S/c11-7-5-9-1-3-10(4-2-9)6-8-15(12,13)14/h11H,1-8H2,(H,12,13,14)
• InChI Key: JKMHFZQWWAIEOD-UHFFFAOYSA-N

詳細

詳細

HEPES, or 4-(2-hydroxyethyl)piperazine-1-ethane-sulfonic acid, serves as a zwitterionic N-substituted aminosulfonic acid buffer with exceptional buffering capacity (pH 6.8-8.2, pKa 7.48 at 25°C). Recognized for versatility, it is extensively employed in cell biology, biochemical, and biological research. Its noteworthy feature lies in its neutrality towards metal ions, making it a preferred "non-coordinating buffer" suitable for solutions containing metals without affecting their activity. In cell biology studies, HEPES excels at maintaining stable physiological pH despite carbon dioxide fluctuations. It outperforms bicarbonate buffers commonly used in this context.

HEPES extends its utility as a preferred separator in creating pH gradients for isoelectric focusing, a technique in protein separation. Beyond these applications, it proves beneficial in immunoprecipitation, cell lysis, live cell imaging, establishing its indispensability across diverse research areas due to its versatility and minimal interaction with other molecules.

アプリケーション

HEPES has been used:

• as a component in Danieau medium, which is used to prevent melanin pigment formation post gastrulation of zebra-fish embryo
• as a component of Hanks′ solution used in the degradation testing of Iron
• as a component of HEPES medium in the transfection of cell culture with plasmids
• along with RPMI-1640, L-glutamine, FBS, Sodium pyruvate and β-mercaptoethanol for the culturing of rat insulinoma cells
• as a supplement in TCM199 medium for washing fresh oocytes required for nuclear transfer studies

特徴および利点

• High purity product for biochemical and biological research
• Highly soluble in water with a useful pH range of 6.8 - 8.2 and pKa of 7.5 at 25 °C

• Broad buffer range between pH 6.8 to 8.2
• Zwitterionic at biological pH
• High solubility and stability
• Low UV and visible light spectrum absorbance
• Negligible metal ion binding
• Suitable for cell culture, electrophoresis, in vitro methods, etc.

その他情報

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安全性情報

• 保管分類コード: 11 - Combustible Solids
• WGK: WGK 1
• 引火点(°F): Not applicable
• 引火点(℃): Not applicable