391338

HEPES

≥99% dry basis (titration), crystalline powder, amniosulfonic acid buffer

• 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: 12352106
• NACRES: NA.25

特性

• product name: HEPES, ULTROL^® Grade, ≥99% dry basis (titration), zwitterionic N-substituted aminosulfonic acid buffer
• 品質水準: 100
• アッセイ: ≥99% dry basis (titration)
• 形状: crystalline powder
• メーカー／製品名: Calbiochem^®
• 保管条件: OK to freeze
• 色: white
• 有効pH範囲: 6.8-8.2
• pKa (25 °C): 7.5
• 溶解性: water: 1 M
• 微量陰イオン: chloride (Cl^-): ≤0.01%; sulfate (SO₄^2-): ≤0.05%
• 微量陽イオン: Na: ≤0.1%; heavy metals: ≤1 ppm
• 輸送温度: ambient
• 保管温度: 15-25°C
• 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

A zwitterionic N-substituted aminosulfonic acid buffer. HEPES has its maximum buffering capacity very near the pH of mammalian tissue fluids (pK_a of 7.31 at 37°C). Exhibits no metal binding and has a small temperature dependent ΔpKa of -0.014/°C.

A zwitterionic N-substituted aminosulfonic acid buffer. Useful in the pH 6.8-8.2 range. Has a pK_a of 7.48 at 25°C.

Absorbance (1.0 M, H₂O, 260 nm):≤0.05.

Absorbance (1.0 M, H₂O, 280 nm): ≤0.04

警告

Toxicity: Irritant (B)

再構成

Following reconstitution, store at room temperature (20°C). Stock solutions are stable for up to 6 months at 20°C.

法的情報

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

ULTROL is a registered trademark of Merck KGaA, Darmstadt, Germany

安全性情報

• 保管分類コード: 13 - Non Combustible Solids
• WGK: WGK 1
• 引火点(°F): Not applicable
• 引火点(℃): Not applicable