2-Oxo-2,3-dihydro-1,3-benzoxazole-6-sulfonamide CAS 22876-18-2
| CAS No. | 22876-18-2 |
| Molecular Formula | C7H6N2O4S |
| Molecular Weight | 214.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Oxo-2,3-dihydro-1,3-benzoxazole-6-sulfonamide (C7H6N2O4S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
2-Oxo-2,3-dihydro-1,3-benzoxazole-6-sulfonamide (CAS 22876-18-2), molecular formula C7H6N2O4S and molecular weight 214.20 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 2-Oxo-2,3-dihydro-1,3-benzoxazole-6-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 | C7H6N2O4S |
| Molecular Weight | 214.20 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 2-Hydroxy-1H-benzo[d]imidazole-6-sulfonic acid (CAS 39513-21-8)
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- 3-(2-Fluorophenyl)-3H-[1,2,3]triazolo[4,5-b]pyridine (CAS 62052-01-1)
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- 6-Methyl-1,4,5,6-tetrahydrocyclopenta[c]pyrazole-3-carboxylic acid (CAS 856256-49-0)
- 2-Chloro-3-fluoro-5-methoxypyridine (CAS 1211588-72-5)
- 5-Fluoro-6-oxo-1,6-dihydropyridine-3-boronic Acid (CAS 1141886-36-3)
- 1-Cyclopentyl-3-nitro-1h-pyrazole (CAS 1170953-36-2)
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- 4-(4-(Aminomethyl)-3-methoxyphenoxy)butanoic acid (CAS 213120-60-6)
- Neuropeptide Y (free acid) (human, rat) trifluoroacetate salt (CAS 99575-89-0)
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