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Merck
CN

C8210

CHES

BioXtra, ≥99.0% (titration)

Synonym(s):

2-(Cyclohexylamino)ethanesulfonic acid

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About This Item

Empirical Formula (Hill Notation):
C8H17NO3S
CAS Number:
103-47-9
Molecular Weight:
207.29
UNSPSC Code:
12161700
NACRES:
NA.25
PubChem Substance ID:
24893031
EC Number:
203-115-6
Beilstein/REAXYS Number:
2967601
MDL number:
MFCD00003835

Key Documents

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Product Name

CHES, BioXtra, ≥99.0% (titration)

InChI key

MKWKNSIESPFAQN-UHFFFAOYSA-N

InChI

1S/C8H17NO3S/c10-13(11,12)7-6-9-8-4-2-1-3-5-8/h8-9H,1-7H2,(H,10,11,12)

SMILES string

OS(=O)(=O)CCNC1CCCCC1

product line

BioXtra

assay

≥99.0% (titration)

form

powder

impurities

≤0.0005% Phosphorus (P)
≤0.1% Insoluble matter

ign. residue

≤0.1%

pH

3.0-5.0 (0.5 M in H2O)

useful pH range

8.6-10.0

pKa (25 °C)

9.3

solubility

H2O: 0.5 M, clear, colorless

anion traces

chloride (Cl-): ≤0.05%
sulfate (SO42-): ≤0.05%

cation traces

Al: ≤0.0005%
Ca: ≤0.001%
Cu: ≤0.0005%
Fe: ≤0.0005%
K: ≤0.005%
Mg: ≤0.0005%
NH4+: ≤0.05%
Na: ≤0.01%
Pb: ≤0.001%
Zn: ≤0.0005%

absorption

≤0.05 at 280 in H2O at 0.5 M
≤0.08 at 260 in H2O at 0.5 M

application(s)

diagnostic assay manufacturing

Quality Level

200

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Application

CHES may be used:
  • for pH adjustments and as a assay buffer in catechol oxidase activity measurements(32)
  • as a buffer in electron paramagnetic resonance (EPR) spectroscopy and kinetic measurements(33)
  • as a buffer for soil solution equivalent (SSE) yeast dextrose medium for screening pH optima for growth of Aridibacter nitratireducens A24_SHP-5_238T(34)

General description

CHES (2-(Cyclohexylamino) ethane sulfonic acid) is a derivative of amino acid taurine. It serves as a standard physiological buffer in the pH range of 8.5-9.5.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
0000508830
0000508830
0000501448
0000501448
0000497708

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Buffers for the physiological pH range: Acidic dissociation constants of zwitterionic compounds (ACES and CHES) in water from 5 to 55? C
Roy RN, et al.
Journal of Chemical and Engineering Data, 42(1), 41-44 (1997)
Jun Yang et al.
Langmuir : the ACS journal of surfaces and colloids, 24(18), 10265-10272 (2008-08-20)
A universal nitric oxide (NO) generating surface is assembled via Layer-by-Layer (LbL) deposition of sodium alginate (Alg) and organoselenium modified polyethyleneimine (SePEI) on quartz and polymeric substrates. The immobilized SePEI species is capable of catalytically decomposing S-nitrosothiol species (RSNO) to
Scott A Sarver et al.
Journal of chromatography. A, 1229, 268-273 (2012-02-11)
Several glycosphingolipids were labeled with the fluorphore Bodipy-Fl and analyzed using capillary electrophoresis with laser-induced fluorescence detection. GM1-, LacCer-, and Cer-Bodipy-Fl were prepared through acylation using the N-hydroxysuccinimide ester of Bodipy-Fl. Several other glycosphingolipids including GT1a-, GD1a-, GM2-, GM3-, GD3-
Luis Felipe Vallejo et al.
Biotechnology and bioengineering, 85(6), 601-609 (2004-02-18)
The human gene encoding the mature form of bone morphogenetic protein-2 (hBMP-2), a dimeric disulfide-bonded protein of the cystine knot growth factor family, was expressed in recombinant Escherichia coli using a temperature-inducible expression system. The recombinant protein was produced in
Takashi Miyado et al.
Journal of chromatography. A, 1206(1), 41-44 (2008-08-12)
In order to develop a high-throughput assay for nitric oxide metabolites, nitrite (NO2-) and nitrate (NO3-), in biological fluids, we have investigated the simultaneous determination of them using an electrophoretic lab-on-a-chip (microchip capillary electrophoresis, MCE) technique. In this study, in
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