Molekula
CAPSO
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
CAPSO is a zwitterionic buffer compound widely used in biochemical research, pharmaceutical formulations, and protein stabilization due to its pH range (6.8–10.0) and low UV absorbance. It maintains solubility across a broad pH spectrum and is non-toxic, making it ideal for cell culture, enzyme assays, and chromatography applications. This chemical has a CAS number of 73463-39-5, molecular formula C9H19NO4S, and a molecular weight of 237.32 g/mol. It is stored at ambient conditions and carries no signal word for hazard classification. Molekula supplies CAPSO 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.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £93.20 per pack ex VAT · £111.84 inc. VAT
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500 g — £232.30 per pack ex VAT · £278.76 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White crystalline powder |
| Identification | Conforms to reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 90030068 |
| CAS Number | 73463-39-5 |
| IUPAC Name | 3-(cyclohexylamino)-2-hydroxypropane-1-sulfonic acid |
| Molecular Formula | C9H19NO4S |
| Molecular Weight | 237.32 |
| Exact Mass | 237.1035 |
| SMILES | C1CCC(CC1)NCC(CS(=O)(=O)O)O |
| InChIKey | INEWUCPYEUEQTN-UHFFFAOYSA-N |
| InChI | InChI=1S/C9H19NO4S/c11-9(7-15(12,13)14)6-10-8-4-2-1-3-5-8/h8-11H,1-7H2,(H,12,13,14) |
| PubChem CID | 2733480 |
| REACH Code | Y113 |
| HTS Code | 29225050 |
| Tariff Code | 2922190090 |
Safety & GHS
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
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
- 1-Propanesulfonic acid, 3-(cyclohexylamino)-2-hydroxy-
- 3-(cyclohexylamino)-2-hydroxy-1-propanesuhicic acid
- 3-(Cyclohexylamino)-2-hydroxy-1-propanesulfonic acid
- 3-(cyclohexylamino)-2-hydroxy-1-propanesulphonic acid
- 3-(cyclohexylamino)-2-hydroxypropane-1-sulfonic acid
- 3-(cyclohexylamino)-2-hydroxypropane-1-sulonic acid
- 3-(CYCLOHEXYLAMINO)-2-HYDROXYPROPANESULFONIC ACID
- CAPSO (buffer)
- Capso compound
- CAPSO, free acid
Frequently asked questions
What is CAPSO primarily used for?
CAPSO (3-(cyclohexylamino)-2-hydroxy-1-propanesulfonic acid) is commonly used as a buffering agent in biochemical and pharmaceutical applications, particularly in protein crystallization and pH-sensitive experiments.
What is the chemical formula and molecular weight of CAPSO?
The chemical formula of CAPSO is C₉H₁₉NO₄S, and its molecular weight is 237.32 g/mol.
How should CAPSO be stored?
CAPSO should be stored at ambient temperature in a cool, dry place, away from direct sunlight.
What grades of CAPSO does Molekula supply?
Molekula supplies analytical and biochemical-grade CAPSO, suitable for research and laboratory applications.
Can Molekula supply CAPSO in bulk quantities?
Yes, Molekula can supply CAPSO in bulk, with quantities tailored to meet your specific research or production needs.
What documentation comes with a CAPSO order?
Each CAPSO order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
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.