2-Ethoxybenzenesulfonyl chloride CAS 68800-33-9
| CAS No. | 68800-33-9 |
| Molecular Formula | C8H9ClO3S |
| Molecular Weight | 220.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 220.67 g/mol gives 2-Ethoxybenzenesulfonyl chloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Ethoxybenzenesulfonyl chloride (CAS 68800-33-9), molecular formula C8H9ClO3S and molecular weight 220.67 g/mol, is a CATO reference standard with documented purity and traceability.
2-Ethoxybenzenesulfonyl chloride (C8H9ClO3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, 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).
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 | C8H9ClO3S |
| Molecular Weight | 220.67 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Ethoxybenzenesulfonyl Standards
- 4-Ethoxybenzenesulfonyl Chloride (CAS 1132-17-8)
- 1-(4-Ethoxybenzenesulfonyl)piperazine (CAS 731821-80-0)
- n-(4-Ethoxybenzenesulfonyl)benzamide (CAS 708290-01-1)
- N-(4-Ethoxybenzenesulfonyl)benzenecarbonimidoyl chloride (CAS 882181-00-2)
- 3-(4-Ethoxybenzenesulfonyl)-4-hydroxy-2-oxo-1,2-dihydroquinoline-7-carboxylic acid (CAS 1351398-45-2)
Recommended Standards
- 2-Chloro-1-methoxy-4-(methylsulfonyl)benzene (CAS 98490-92-7)
- 2-Ethyl-4,4-difluorobutane-1-sulfonyl chloride (CAS 2021249-06-7)
- 2-(4-Chlorobenzenesulfonyl)ethan-1-ol (CAS 35847-95-1)
- 2-Hydroxy-3,5-dimethylbenzene-1-sulfonyl chloride (CAS 872277-84-4)
- 2,2,2-Trifluoro-1-(pyrrolidin-2-yl)ethan-1-ol (CAS 1306310-33-7)
- 4-Methyl-N-(pentan-3-yl)aniline (CAS 1021010-74-1)
- 2-Amino-5-bromo-3,6-dimethylpyridine (CAS 221135-63-3)
- 2-(4-Methoxyphenyl)-6,6-dimethyl-4,8-dioxospiro[2.5]Octane-1,1-dicarbonitrile (CAS 478041-28-0)
- 5-Amino-1-benzyl-3-methylpyridin-2(1H)-one (CAS 2271477-28-0)
- 3-Methyl-1-(4-(p-tolyl)thiazol-2-yl)-1h-pyrazol-5-amine (CAS 1171174-91-6)
- 2-Ethoxybutanehydrazide (CAS 915920-33-1)
- (4-Benzylpiperazin-1-yl)(4-(2-methylbenzoyl)-1H-pyrrol-2-yl)methanone (CAS 478249-51-3)
- n,n-Diethyl-5-methyl-4-oxo-2-(pyridin-2-yl)-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxamide (CAS 745035-26-1)
- (Tyr9)-Cholecystokinin Octapeptide (sulfated) (H-9770.0005) (CAS 96607-61-3)
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