3-(1,2-oxazol-5-yl)benzene-1-sulfonyl chloride CAS 13567-19-6
| CAS No. | 13567-19-6 |
| Molecular Formula | C9H6ClNO3S |
| Molecular Weight | 243.67 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-(1,2-oxazol-5-yl)benzene-1-sulfonyl chloride (CAS 13567-19-6), molecular formula C9H6ClNO3S and molecular weight 243.67 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-(1,2-oxazol-5-yl)benzene-1-sulfonyl chloride (C9H6ClNO3S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 3-(1,2-oxazol-5-yl)benzene-1-sulfonyl chloride 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 | C9H6ClNO3S |
| Molecular Weight | 243.67 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related oxazol Standards
- 2-(Oxazol-5-yl)benzenesulfonyl chloride (CAS 1053658-65-3)
- 2-(1,2-oxazol-4-yl)benzene-1-sulfonyl chloride (CAS 87488-71-9)
- 2-(1,2-oxazol-5-yl)benzene-1-sulfonyl chloride (CAS 87488-64-0)
- 3-(Oxazol-5-yl)benzenesulfonyl chloride (CAS 499770-75-1)
- 4-(1,2-oxazol-5-yl)benzene-1-sulfonyl chloride (CAS 5765-41-3)
- 4-(Oxazol-2-yl)benzenesulfonyl chloride (CAS 956595-45-2)
- 4-(Oxazol-4-yl)benzene-1-sulfonyl chloride (CAS 954368-94-6)
- 4-(Oxazol-5-yl)benzenesulfonyl chloride (CAS 337508-66-4)
Recommended Standards
- 1-(Pyridin-3-yl)-1h-pyrazole-4-sulfonyl chloride (CAS 1306605-21-9)
- 5-Phenyl-1H-1,2,4-triazole-3-sulfonyl chloride (CAS 1381947-50-7)
- 8-Chloroquinoline-5-sulfonic acid (CAS 129305-09-5)
- 3-Acetyl-5-cyanobenzenesulfonyl chloride (CAS 1393562-91-8)
- 4-Cyclobutyloxyazepane (CAS 1341936-56-8)
- (R)-(+)-N-(1-Phenylethyl)phthalamic acid (CAS 21752-35-2)
- 1-Benzyl-3-propylpiperidin-4-one (CAS 344256-56-0)
- 5-Ethoxy-1-methyl-3-(trifluoromethyl)-1H-pyrazole (CAS 676487-71-1)
- 4-(azidomethyl)benzenesulfonyl fluoride (CAS 2138241-82-2)
- n-(3-Aminophenyl)cyclohexanecarboxamide (CAS 43096-46-4)
- (3-Bromo-4-isopropoxyphenyl)methanamine (CAS 1339365-08-0)
- 3-Hydroxy-3,5,5-trimethylcyclohexanone (CAS 89768-14-9)
- 3-(Chloromethyl)-1-isopropoxy-4-methylpentane (CAS 1495034-23-5)
- [5-31]-Semaglutide (CAS CATO-C4X-2226263)
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