3-Ethyl-1-methyl-1h-pyrazole-4-sulfonamide CAS 1490968-79-0
| CAS No. | 1490968-79-0 |
| Molecular Formula | C6H11N3O2S |
| Molecular Weight | 189.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 189.24 g/mol gives 3-Ethyl-1-methyl-1h-pyrazole-4-sulfonamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-Ethyl-1-methyl-1h-pyrazole-4-sulfonamide (CAS 1490968-79-0) is a high-purity analytical reference standard with the molecular formula C6H11N3O2S and a molecular weight of 189.24 g/mol.
Based on its molecular formula C6H11N3O2S, 3-Ethyl-1-methyl-1h-pyrazole-4-sulfonamide contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 189.24 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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), 3-Ethyl-1-methyl-1h-pyrazole-4-sulfonamide 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 | C6H11N3O2S |
| Molecular Weight | 189.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
- n-(1-Ethyl-1h-imidazol-5-yl)methanesulfonamide (CAS 1485300-16-0)
- 1-Ethyl-n-methyl-1h-imidazole-4-sulfonamide (CAS 1505017-76-4)
- n-(1,3-Dimethyl-1h-pyrazol-5-yl)methanesulfonamide (CAS 1480380-11-7)
- 4H-Benzo[4,5]imidazo[1,2-d][1,3,4]thiadiazine (CAS 154249-47-5)
- 3-(Nitromethyl)thietan-3-ol (CAS 1379812-19-7)
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