Perfluoroethanesulfonic acid, potassium salt CAS 2837-92-5
| CAS No. | 2837-92-5 |
| Molecular Formula | C2HF5O3S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Perfluoroethanesulfonic acid, potassium salt (CAS 2837-92-5), molecular formula C2HF5O3SK and molecular weight 239.18 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, an ether linkage, fluorine substitution, Perfluoroethanesulfonic acid, potassium salt is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 239.18 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Perfluoroethanesulfonic acid, potassium salt meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C2HF5O3S K |
| Molecular Weight | 239.18 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 0.0 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Recommended Standards
- 1-(3-(Tert-butyl)-4-methoxyphenyl)ethan-1-one (CAS 142651-19-2)
- (Z)-2-Methylpent-2-enedioic acid (CAS 53358-22-8)
- Carbomethoxyethylthioethyl 4-O-(4-O-[6-O-{a-D-glucopyranosyl}-a-D-glucopyranosyl]-a-D-glucopyranosyl)-b-D-glucopyranoside (CAS 90214-99-6)
- 2-Chloro-6-iodoquinazolin-4(3H)-one (CAS 438190-96-6)
- 1,2,2-Trichloropropane (CAS 3175-23-3)
- 1-(2,4-Difluorophenyl)-3-(3-methoxyphenyl)propan-1-one (CAS 898775-28-5)
- Difelikefalin Impurity 5 (CAS 1024828-78-1)
- 1806348-57-1 3,5-Dibromo-2-(difluoromethoxy)phenylacetic acid (CAS 1806348-57-1)
- Methyl 2-((4-bromophenoxy)methyl)benzoate (CAS 79669-48-0)
- Semaglutide impurity 68 (CAS CATO-C4X-222668)
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