Molekula
AMPSO (N-(1,1-Dimethyl-2-hydroxyethyl)-3-amino-2-hydroxypropanesulfonic acid)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
AMPSO is a sulfonic acid derivative used in pharmaceutical and biochemical research as a zwitterionic buffer and stabilizer. It is a white to off-white powder with a molecular weight of 227.28 g/mol, a molecular formula of C7H17NO5S, and a CAS number of 68399-79-1. It is stable at ambient temperatures and has no signal word. Molekula supplies AMPSO 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
In stock — same-day dispatch
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 — £137.20 per pack ex VAT · £164.64 inc. VAT
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500 g — £467.90 per pack ex VAT · £561.48 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 powder |
| Melting Point | 215 - 225 °C |
| Loss on Drying | ≤ 1.0% |
| Assay | ≥ 98% |
| pH (1% sol.) | 5.5-6.5 |
| OD260 nm (0.1M aq Solution) | ≤ 0.1 |
| OD280 nm (0.1M aq Solution) | ≤ 0.1 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
Identification
| Property | Value |
|---|---|
| SKU | 17283132 |
| CAS Number | 68399-79-1 |
| IUPAC Name | 2-hydroxy-3-[(1-hydroxy-2-methylpropan-2-yl)amino]propane-1-sulfonic acid |
| EC Number | 269-991-7 |
| Molecular Formula | C7H17NO5S |
| Molecular Weight | 227.28 |
| Exact Mass | 227.0827 |
| SMILES | CC(C)(CO)NCC(CS(=O)(=O)O)O |
| InChIKey | ACERFIHBIWMFOR-UHFFFAOYSA-N |
| InChI | InChI=1S/C7H17NO5S/c1-7(2,5-9)8-3-6(10)4-14(11,12)13/h6,8-10H,3-5H2,1-2H3,(H,11,12,13) |
| PubChem CID | 100211 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2922.19.96.90 |
| Tariff Code | 2922190090 |
Safety & GHS
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 1-Propanesulfonic acid, 2-hydroxy-3-((2-hydroxy-1,1-dimethylethyl)amino)-
- 2-Hydroxy-3-((1-hydroxy-2-methylpropan-2-yl)amino)propane-1-sulfonic acid
- 2-hydroxy-3-[(2-hydroxy-1,1-dimethylethyl)amino]-1-propanesulfonic acid
- 2-hydroxy-3-[(2-hydroxy-1,1-dimethylethyl)amino]propanesulphonic acid
- 2-hydroxy-3-[(2-hydroxy-tert-butyl)amino]propanesulfonic acid
- 3-((1,1-Dimethyl-2-hydroxyethyl)amino)-2-hydroxypropanesulfonic acid
- 3-(N-(1,1-Dimethylhydroxyethyl)amino)-2-hydroxy-propanesulfonic acid
- AMPSO
- Ampso 0.2 M buffer solution
- N-(1,1-Dimethyl-2-hydroxyethyl)-3-amino-2-hydroxypropanesulfonic acid
Frequently asked questions
What is AMPSO used for?
AMPSO is a zwitterionic Good's-type biological buffer with a useful pH range of about 8.3 to 9.7. It is primarily used as a buffer in biochemical work, for example in electrophoresis and transfer buffers.
What is the chemical formula and molecular weight of AMPSO?
The formula is C7H17NO5S with a molecular weight of 227.28 g/mol.
How should AMPSO be stored?
AMPSO should be stored at ambient temperature, protected from moisture and direct sunlight.
What grade of AMPSO is available?
Molekula supplies AMPSO in technical grade; custom grades are available upon request.
Can Molekula supply AMPSO in bulk?
Yes, Molekula can supply AMPSO in bulk quantities; please contact sales for pricing and availability.
What documentation comes with an AMPSO order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation is available upon request.
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.