2-Oxo-2,3-dihydrobenzo[d]oxazole-5-sulfonamide CAS 31591-39-6
| CAS No. | 31591-39-6 |
| Molecular Formula | C7H6N2O4S |
| Molecular Weight | 214.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
2-Oxo-2,3-dihydrobenzo[d]oxazole-5-sulfonamide (CAS 31591-39-6), molecular formula C7H6N2O4S and molecular weight 214.20 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H6N2O4S, 2-Oxo-2,3-dihydrobenzo[d]oxazole-5-sulfonamide contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 214.20 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 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.) | 1966 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Oxo Standards
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Recommended Standards
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- 2-Hydroxy-1H-benzo[d]imidazole-6-sulfonic acid (CAS 39513-21-8)
- 3-(3-Fluorophenyl)-3H-[1,2,3]triazolo[4,5-b]pyridine (CAS 62051-95-0)
- N-(3-Amino-4-chlorophenyl)cyclopentanecarboxamide (CAS 926212-14-8)
- (1R,4R)-2-Menthene-1,8-diol (CAS 20053-40-1)
- Trimethyl 2-bromobenzene-1,3,5-tricarboxylate (CAS 43141-00-0)
- N (CAS 51549-49-6)
- Ethyl Benzo[d][1,3]dioxole-5-carboxylate (CAS 6951-08-2)
- 2,3-dichloro-3-[(2-chlorobenzyl)sulfinyl]-N-(6-methoxy-3-pyridinyl)acrylamide (CAS 337922-38-0)
- 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)quinazoline (CAS 2264017-65-2)
- 1-(Cyclopentyloxy)-2-fluoro-4-nitrobenzene (CAS 956015-49-9)
- (R)-tert-Butyl 3-((6-(diethylamino)pyrimidin-4-yl)amino)pyrrolidine-1-carboxylate (CAS 1354000-17-1)
- Allo-Thr7-Tirzepatide (CAS CATO-CPTD788933)
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