4-(2-Oxo-1,3,4-oxadiazol-3(2H)-yl)benzenesulfonamide CAS 64890-57-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 64890-57-9 |
| Molecular Formula | C8H7N3O4S |
| Molecular Weight | 241.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(2-Oxo-1,3,4-oxadiazol-3(2H)-yl)benzenesulfonamide (CAS 64890-57-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C8H7N3O4S. Molecular weight: 241.22 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C8H7N3O4S |
| Molecular Weight | 241.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Oxo Standards
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Recommended Standards
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- Methyl 2-[2-(4-amino-3-fluorophenyl)-1,3-benzoxazol-5-yl]acetate (CAS 695186-53-9)
- 6-Chloro-2-(difluoromethyl)-5-nitropyridin-3-ol (CAS 1805386-28-0)
- (4-Iodo-2-nitrophenyl)hydrazine (CAS 89640-59-5)
- 1-(P-tolylthio)cyclobutane-1-carboxylic acid (CAS 1492623-52-5)
- (2S,3S)-2,3-bis(4-methoxybenzoyloxy)butanedioic acid; bis((5R)-1-benzyl-5-methyl-1,4-diazepane) (CAS 1644457-23-7)
- 1-(2-Nitrophenyl)-1H-pyrazole-5-carbaldehyde (CAS 1269292-09-2)
- Acetyl Tetrapeptide-11 (CAS 928006-88-6)
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