4-(2-Methyloxazol-5-yl)benzenesulfonyl chloride CAS 293306-72-6
| CAS No. | 293306-72-6 |
| Molecular Formula | C10H8ClNO3S |
| Molecular Weight | 257.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-(2-Methyloxazol-5-yl)benzenesulfonyl chloride.
4-(2-Methyloxazol-5-yl)benzenesulfonyl chloride (CAS 293306-72-6), molecular formula C10H8ClNO3S and molecular weight 257.69 g/mol, is a CATO reference standard with documented purity and traceability.
4-(2-Methyloxazol-5-yl)benzenesulfonyl chloride (C10H8ClNO3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C10H8ClNO3S |
| Molecular Weight | 257.69 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.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Methyloxazol Standards
- 4-(2-Methyloxazol-4-yl)benzenesulfonyl chloride (CAS 1086376-81-9)
- 4-((5-Methyloxazol-4-yl)amino)naphthalene-1,2-dione (CAS 138453-37-9)
- 3-(2-Methyloxazol-4-yl)benzo[d]isoxazole-5-carboxylic acid (CAS 1422066-08-7)
- 2-Methyl-5-(2-methyloxazol-5-yl)benzene-1-sulfonyl chloride (CAS 1268334-77-5)
- N-(4-Methyloxazol-2-yl)-N-pentylbenzamide (CAS 57068-44-7)
- N-(4-Methyloxazol-2-yl)-N-(pentan-3-yl)butyramide (CAS 57068-58-3)
- N-(4-Methyloxazol-2-yl)-N-pentylbutyramide (CAS 57068-51-6)
- N-(4-Methyloxazol-2-yl)-N-propylhexanamide (CAS 57068-57-2)
Recommended Standards
- 4-(2-Chlorophenyl)thiomorpholine-3,5-dione 1-oxide (CAS 338421-44-6)
- 4-(3-Chlorophenyl)thiomorpholine-3,5-dione 1-oxide (CAS 338421-15-1)
- 3-Chloro-1-(2-fluorophenyl)isoquinoline (CAS 89721-09-5)
- 4-(4-Chlorophenyl)thiomorpholine-3,5-dione 1-oxide (CAS 338409-75-9)
- 3-Amino-N-(2,6-dichlorophenyl)-6,7,8,9-tetrahydro-5H-cyclohepta[b]thieno[3,2-e]pyridine-2-carboxamide (CAS 387831-20-1)
- H-D-Ala-Gly-Gly-OH (CAS 77286-90-9)
- 2,3-Diamino-4-(trifluoromethyl)pyridine (CAS 1227571-48-3)
- 8-Bromo-1,5-naphthyridin-2(1H)-one (CAS 1211579-32-6)
- Ethyl (1-(cyanomethyl)piperidin-4-yl)carbamate (CAS 1241222-32-1)
- N-(1-Carbamoylcyclohexyl)-4-chlorobenzamide (CAS 946385-21-3)
- 3,5-Dimethyl-4-methoxybenzyl bromide (CAS 83037-99-4)
- Epinastine Impurity 22 (CAS 124847-00-3)
- 1-(5-(tert-Butylthio)-6-methylpyridin-2-yl)piperazine (CAS 1355225-48-7)
- Semaglutide impurity 81 (CAS CATO-C4X-222681)
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