2-(1H-pyrazol-1-yl)ethane-1-sulfonyl fluoride CAS 1461713-97-2
| CAS No. | 1461713-97-2 |
| Molecular Formula | C5H7FN2O2S |
| Molecular Weight | 178.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-(1H-pyrazol-1-yl)ethane-1-sulfonyl fluoride (CAS 1461713-97-2), molecular formula C5H7FN2O2S and molecular weight 178.18 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, 2-(1H-pyrazol-1-yl)ethane-1-sulfonyl fluoride is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 178.18 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), 2-(1H-pyrazol-1-yl)ethane-1-sulfonyl fluoride 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 | C5H7FN2O2S |
| Molecular Weight | 178.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related H Standards
- 1-(2-(1h-Pyrazol-1-yl)ethyl)-1h-1,2,4-triazol-3-amine (CAS 1251130-49-0)
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