H7523

Sigma-Aldrich

HEPES

BioXtra, pH 5.0-6.5 (1 M in H2O), ≥99.5% (titration)

Synonym(s):
N-(2-Hydroxyethyl)piperazine-N′-(2-ethanesulfonic acid), 4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid
Empirical Formula (Hill Notation):
C8H18N2O4S
CAS Number:
Molecular Weight:
238.30
Beilstein/REAXYS Number:
883043
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

product line

BioXtra

assay

≥99.5% (titration)

form

powder

impurities

Insoluble matter, passes filter test

ign. residue (900 °C)

≤0.1% (as SO4)

loss

≤1.0% loss on drying, 110°C

pH

5.0-6.5 (1 M in H2O)

useful pH range

6.8 - 8.2

pKa (25 °C)

7.5

solubility

H2O: 1 M, clear, colorless

anion traces

chloride (Cl-): ≤0.05%

cation traces

Al: ≤0.0005%
As: ≤0.0001%
Ba: ≤0.0005%
Bi: ≤0.0005%
Ca: ≤0.001%
Cd: ≤0.0005%
Co: ≤0.0005%
Cr: ≤0.0005%
Cu: ≤0.0005%
Fe: ≤0.0005%
K: ≤0.005%
Li: ≤0.0005%
Mg: ≤0.0005%
Mn: ≤0.0005%
Mo: ≤0.0005%
Na: ≤0.005%
Ni: ≤0.0005%
Pb: ≤0.0005%
Sr: ≤0.0005%
Zn: ≤0.0005%

absorption

≤0.035 at 280 in H2O at 1 M
≤0.045 at 260 in H2O at 1 M

Featured Industry

Diagnostic Assay Manufacturing

SMILES string

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

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General description

HEPES has been described as one of the best all-purpose buffers available for biological research. At biological pH, the molecule is zwitterionic, and is effective as a buffer at pH 6.8 to 8.2. HEPES has been used in a wide variety of applications, including tissue culture. It is commonly used to buffer cell culture media in air. HEPES finds its usage in in vitro experiments on Mg.

Application

HEPES has been used:
  • As a component of homogenisation buffer used in protein sample preparation
  • To neutralise PRP (platelet-rich plasma) solution as part of PRP preparation
  • As a component in 2X PBS buffer, which is used in phosphate calcium transfection in cell line preparation
  • As a supplement in RPMI 1640 medium used to culture human umbilical vein endothelial cells (HUVEC) and in M199 complete medium for ex-vivo treatment of testicular tissue.

Packaging

50, 250 g in poly bottle

Other Notes

Easily compare specifications for HEPES products with the HEPES specification table.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

NONH for all modes of transport

WGK Germany

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

The inhibitory effect of intracerebroventricularly injected interleukin 1? on testosterone secretion in the rat: role of steroidogenic acute regulatory protein.
Ogilvie KM, et al.
Biology of Reproduction, 60(2), 527-533 (1999)
In vitro tubulogenesis of endothelial cells by relaxation of the coupling extracellular matrix-cytoskeleton.
Deroanne CF, et al.
Cardiovascular Research, 49(3), 647-658 (2001)
Intervertebral disc regeneration in an ex vivo culture system using mesenchymal stem cells and platelet-rich plasma.
Chen WH, et al.
Biomaterials, 30(29), 5523-5533 (2009)
Hsp60-induced tolerance in the rotifer Brachionus plicatilis exposed to multiple environmental contaminants.
Wheelock CE, et al.
Archives of Environmental Contamination and Toxicology, 36(3), 281-287 (1999)
Increased expression of reticulon 3 in neurons leads to reduced axonal transport of $\beta$ site amyloid precursor protein-cleaving enzyme 1.
Deng M, et al.
The Journal of Biological Chemistry, 288(42), 30236-30245 (2013)

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