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Products > Optimize Reagents > Optimize – Buffers > HEPES Buffer
HEPES Buffer
Applications
- Crystallization grade HEPES buffer for formulating screens or for optimization
Features
- Sterile filtered
- Formulated in Type 1+ ultrapure water: 18.2 megaohm-cm resistivity at 25°C, < 5 ppb Total Organic Carbon, bacteria free (<1 Bacteria (CFU/ml)), pyrogen free (<0.03 Endotoxin (EU/ml)), RNase-free (< 0.01 ng/mL) and DNase-free (< 4 pg/µL)
Description
HEPES
Synonyms: 2-[4-(2-Hydroxyethyl)-1-piperazinyl]ethanesulfonic acid or 4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid or N-(2-Hydroxyethyl)piperazine-N′-(2-ethanesulfonic acid)
C8H18N2O4S
Mr 238.31
CAS Number [7365-45-9]
EC Number 230-907-9
Beilstein Registry Number 883043
Merck 14,4654
RTECS TL6809000
MDL Number MFCD00006158
PubChem Substance ID 24895616
Purity ≥ 99.5%
pKa 7.5 at 25°C
Useful pH range of HEPES buffer 6.8 – 8.2
Titrate HR2-585 to the desired pH between 6.8 – 8.2 using NaOH
HR2-585 Measured pH Range: 5.4 – 5.5 at 25°C
HR2-585 Measured Conductivity Range: 160.1 – 236.9 μS/cm at 25°C
HR2-585 Measured Refractive Index Range: 1.37093 – 1.37131 at 20°C
HR2-785 is titrated to pH 7.0 using NaOH
HR2-785 Measured Conductivity Range: 5.8 – 7.0 mS/cm at 25°C
HR2-785 Measured Refractive Index Range: 1.37133 – 1.37176 at 20°C
HR2-729 is titrated to pH 7.5 using NaOH
HR2-729 Measured Conductivity Range: 11.6 – 13.6 mS/cm at 25°C
HR2-729 Measured Refractive Index Range: 1.37177 – 1.37290 at 20°C
Insoluble Matter 0.01% max
DNase None Detected
RNase None Detected
Protease None Detected
Heavy Metals 1 ppm max
As 5 ppm max
Cu 5 ppm max
Fe 5 ppm max
Pb 5 ppm max
SO4 0.005% max
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CAT NO
HR2-585
NAME
DESCRIPTION
100 mL
PRICE
$113.00
cart quote
CAT NO
HR2-785
NAME
DESCRIPTION
100 mL
PRICE
$113.00
cart quote
CAT NO
HR2-729
NAME
DESCRIPTION
100 mL
PRICE
$113.00
cart quote
Support Material(s)
HR2-585 HEPES SDS
HR2-785 HEPES pH 7.0 SDS
HR2-729 HEPES pH 7.5 SDS
HR2-583 Certificate of Analysis
Titration Table Certificate Of Analysis
Related Item(S)
- Sodium hydroxide
- StockOptions Hepes Buffer Kit
- Individual StockOptions HEPES Reagents
References
1. Crystallization and preliminary X-ray crystallographic studies of native elastase from North Atlantic salmon (Salmo salar). Berglund, GI; Snalas, AO; Hansen, LK. Acta Crystallogr D 51, 393- 394, 1995.
Hampton Research, first in crystallization since 1991, developing and delivering crystallization and optimization screens, reagents, plates, and other tools for the crystallization of biological macromolecules, including proteins (antibody), peptides (insulin), and nucleic acids (DNA).
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