3-Methylthiophene-2-sulfonamide CAS 81417-51-8
| CAS No. | 81417-51-8 |
| Molecular Formula | C5H7NO2S2 |
| Molecular Weight | 177.24 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.
3-Methylthiophene-2-sulfonamide (CAS 81417-51-8) is a high-purity analytical reference standard with the molecular formula C5H7NO2S2 and a molecular weight of 177.24 g/mol.
Based on its molecular formula C5H7NO2S2, 3-Methylthiophene-2-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 177.24 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).
CATO manufactures 3-Methylthiophene-2-sulfonamide under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H7NO2S2 |
| Molecular Weight | 177.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Methylthiophene Standards
- 5-Methylthiophene-3-sulfonamide (CAS 1017264-52-6)
- 5-Methylthiophene-2-sulfonamide (CAS 53595-69-0)
- N-methylthiophene-2-sulfonamide (CAS 53442-30-1)
- 3-Methylthiophene-2-sulfonic acid (CAS 1159877-58-3)
- 4-ethyl-5-methylthiophene-3-carboxylic acid (CAS 884497-34-1)
- 5-ethyl-4-methylthiophene-2-carboxylic acid (CAS 40808-25-1)
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Recommended Standards
- 3-Methyl-N-propylbenzamide (CAS 330466-42-7)
- 3-Phenyl-4-piperidinol (CAS 874361-13-4)
- 3-Methyl-N-phenylbutanamide (CAS 2364-50-3)
- 3-Phenylpiperidin-3-ol (CAS 23396-50-1)
- 2-(2-Ethoxy-4-formyl-6-iodophenoxy)-N-phenethylacetamide (CAS 486994-22-3)
- 4-(Difluoromethyl)-5,6-dihydroxypyridine-2-sulfonamide (CAS 1805008-99-4)
- tert-Butyl 7-amino-1H-indazole-1-carboxylate (CAS 173459-53-5)
- 1-((4-Methoxyphenyl)sulfonyl)-4-(3-(thiophen-2-yl)-1H-pyrazol-5-yl)piperidine (CAS 321848-34-4)
- 4-Chloro-3-(difluoromethoxy)-5-(methylthio)thiophene-2-carboxylic acid (CAS 1707727-86-3)
- 3-(5-Phenyl-1,2,4-oxadiazol-3-yl)propanoic acid (CAS 1082329-59-6)
- 3-bromo-6-chlorocinnolin-4-ol (CAS 873999-35-0)
- 1,3-Difluoro-5-(3-nitrophenyl)benzene (CAS 865856-72-0)
- 4-(Ethylthio)-2-phenyl-5H-pyrrolo[3,2-d]pyrimidine-7-carbaldehyde (CAS 89177-10-6)
- Semaglutide238 (CAS CATO-C4X-2226238)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com