Molekula
CHES (2-(Cyclohexylamino)ethanesulfonic acid)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
CHES (2-(Cyclohexylamino)ethanesulfonic acid) is a zwitterionic buffering agent widely used in biochemical research, particularly for maintaining pH stability in protein solutions, enzyme assays, and cell culture media. It is effective across a pH range of 8.6–10.0 and is known for its minimal interference with biological activity. CAS 103-47-9, molecular formula C8H17NO3S, molecular weight 207.29 g/mol. Store at ambient conditions. Signal word: Warning. Molekula supplies CHES from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
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25 g — $49.80 per pack
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Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White crystalline powder |
| Moisture | LOD:≤1.0% |
| Solubility in water | As 5% solution: Clear and complete |
| Assay (Titration) | ≥99.0% |
| pKa | 9.3-9.7 |
| UV(0.1M in H2O) A260nm | ≤0.04 |
| UV(0.1M in H2O) A280nm | ≤0.05 |
| pH (1% aq. sol.) | 5 - 6 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 90005074 |
| CAS Number | 103-47-9 |
| IUPAC Name | 2-(cyclohexylamino)ethanesulfonic acid |
| EC Number | 203-115-6 |
| Molecular Formula | C8H17NO3S |
| Molecular Weight | 207.29 |
| Exact Mass | 207.0929 |
| SMILES | C1CCC(CC1)NCCS(=O)(=O)O |
| InChIKey | MKWKNSIESPFAQN-UHFFFAOYSA-N |
| InChI | 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) |
| PubChem CID | 66898 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2921.30 |
| Tariff Code | 2921309990 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P304+341 IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 2-(cyclohexylamino)ethane-1-sulfonic acid
- 2-(Cyclohexylamino)ethanesulfonic acid
- 2-(Cyclohexylamino)ethanesulphonic acid
- 2-(N-Cyclohexylamino)ethanesulfonic acid
- Beef extract
- CHES
- Ethanesulfonic acid, 2-(cyclohexylamino)-
- N-Cyclohexyl-2-aminoethanesulfonic acid
- N-Cyclohexyltaurine
- Taurine, N-cyclohexyl-
Frequently asked questions
What is CHES (2-(Cyclohexylamino)ethanesulfonic acid) commonly used for?
CHES is primarily used as a buffer in biochemical and molecular biology applications, particularly in gel electrophoresis and protein purification, due to its stable pH over a range of 8.6–10.0.
What is the chemical formula and molecular weight of CHES?
The chemical formula is **C₈H₁₇NO₃S**, and the molecular weight is **207.29 g/mol**.
How should CHES be stored?
CHES should be stored at **ambient temperature** in a tightly sealed container, away from moisture and direct sunlight.
What grades of CHES does Molekula supply?
Molekula supplies **ACS-grade CHES** for laboratory and research applications, ensuring high purity and consistency.
Can Molekula supply CHES in bulk quantities?
Yes, Molekula can provide CHES in bulk, with quantities tailored to meet your specific research or industrial needs—please contact us for pricing and availability.
What documentation comes with an order of CHES?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific documentation to ensure traceability and compliance.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.