CHES
Synonym(s):2-(Cyclohexylamino)ethanesulfonic acid;2-(N-Cyclohexylamino)Ethanesulfonic Acid;CHES
- CAS NO.:103-47-9
- Empirical Formula: C8H17NO3S
- Molecular Weight: 207.29
- MDL number: MFCD00003835
- EINECS: 203-115-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:21:33
What is CHES ?
Chemical properties
White/clear cryst. powder
The Uses of CHES
Biological buffer.
The Uses of CHES
CHES is zwitterionic buffer useful in pH range 8.6 to 10.0.CHES is widely utilized as a buffer which is used for investigations on pH-dependent processes in enzymology. It has been shown to have an unusually high affinity for the iodoacetate binding site of liver alcohol dehydrogenase.
The Uses of CHES
2-(Cyclohexylamino)ethanesulfonic acid (CHES) has been used in the preparation of dimethyl trisulfide- polysorbate 80 (DMTS-PS80) formulation.
What are the applications of Application
CHES is a zwitterionic buffering agent useful at pH 8.6-10.0, pKa 9.49 (25°C)
Definition
ChEBI: N-cyclohexyl-2-aminoethanesulfonic acid is an alkanesulfonic acid that is cyclohexanamine in which one of the amino hydrogens is substituted by a 2-sulfoethyl group. It is used as a buffer (pH range of 8.6-10.0) for studying pH-dependent processes in enzymology. It has a role as a Good's buffer substance. It is an alkanesulfonic acid and a secondary aliphatic amine.
What are the applications of Application
CHES belongs to the class of organic compounds known as cyclohexylamines. These are organic compounds containing a cyclohexylamine moiety, which consist of a cyclohexane ring attached to an amine group. It is often used as biological buffer. It can bind to hemagglutinin (HA) emulating with sialic acid (SA) and receptor binding site (RBS)-targeting broadly neutralizing antibodies.
General Description
CHES (2-(N-cyclohexylamino)ethanesulphonic acid) is regarded as Good′s buffers for its self-buffering and biocompatible feature. It is used in protein stabilization and does not interact with metals.
Flammability and Explosibility
Not classified
Properties of CHES
| Melting point: | ≥300 °C |
| Density | 1.2045 (rough estimate) |
| vapor pressure | 0Pa at 25℃ |
| refractive index | 1.5364 (estimate) |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| solubility | H2O: 0.5 M at 20 °C, clear, colorless |
| form | Solid |
| color | White |
| PH | 3.0-5.0 (25℃, 0.5M in H2O) |
| pka | 9.3(at 25℃) |
| Odor | Odorless |
| PH Range | 8.6 - 10.0 |
| Water Solubility | Soluble |
| Sensitive | Hygroscopic |
| λmax | λ: 260 nm Amax: 0.08 λ: 280 nm Amax: 0.05 |
| Merck | 14,2055 |
| BRN | 2967601 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 103-47-9(CAS DataBase Reference) |
| EPA Substance Registry System | Ethanesulfonic acid, 2-(cyclohexylamino)- (103-47-9) |
Safety information for CHES
| Signal word | Warning |
| Pictogram(s) |
![]() Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P337+P313:IF eye irritation persists: Get medical advice/attention. |
Computed Descriptors for CHES
| InChIKey | MKWKNSIESPFAQN-UHFFFAOYSA-N |
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