(4-Ethylphenyl)methanesulfonyl chloride CAS 64732-33-8
| CAS No. | 64732-33-8 |
| Molecular Formula | C9H11ClO2S |
| Molecular Weight | 218.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(4-Ethylphenyl)methanesulfonyl chloride (C9H11ClO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
(4-Ethylphenyl)methanesulfonyl chloride (CAS 64732-33-8), molecular formula C9H11ClO2S and molecular weight 218.70 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.
As a certified reference material (CRM), (4-Ethylphenyl)methanesulfonyl 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 | C9H11ClO2S |
| Molecular Weight | 218.70 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1975 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Ethylphenyl Standards
- (2-Ethylphenyl)methanesulfonyl chloride (CAS 1250901-61-1)
- 1-(1-(4-Ethylphenyl)ethyl)piperazine (CAS 516446-19-8)
- 2-(4-Ethylphenyl)-2-(pyrrolidin-1-yl)ethan-1-amine (CAS 928000-69-5)
- 1-(4-Ethylphenyl)heptan-1-one (CAS 1352224-89-5)
- (2-(2-Ethylphenyl)thiazol-4-yl)methanamine (CAS 885280-84-2)
- (2-(3-Ethylphenyl)thiazol-4-yl)methanamine (CAS 885280-88-6)
- (2-(4-Ethylphenyl)thiazol-4-yl)methanamine (CAS 885280-80-8)
- 4-(4-Ethylphenyl)-5-methyl-1,3-thiazol-2-amine (CAS 438218-98-5)
Recommended Standards
- (3,5-dimethylphenyl)methanesulfonyl chloride (CAS 352708-56-6)
- [(2-chloroethanesulfonyl)methyl]benzene (CAS 66998-67-2)
- (2,6-Dimethylphenyl)methanesulfonyl chloride (CAS 540524-67-2)
- 1-((2-Chloroethyl)sulfonyl)-3-methylbenzene (CAS 89520-73-0)
- N-(5,6-Dimethylbenzo[d]thiazol-2-yl)cyclohexanecarboxamide (CAS 486440-48-6)
- TRAP-7 (CAS 145229-76-1)
- 6,7-Dimethoxy-N-{[3-(trifluoromethyl)phenyl]methyl}quinazolin-4-amine (CAS 477859-89-5)
- rel-tert-Butyl methyl((3R,4R)-4-methylpiperidin-3-yl)carbamate (CAS 1206824-89-6)
- 5-Amino-N-(4-bromo-phenyl)-2-chloro-benzenesulfonamide (CAS 380431-07-2)
- Mirogabalin Impurity 23 (Mixture of Enantiomers) (CAS 1138246-19-1)
- 5-Isobutyl-3-isopropyl-1H-pyrazole (CAS 442887-24-3)
- 1-(Furan-2-ylmethyl)-1h-benzo[d]imidazole-5-carboxylic acid (CAS 284673-20-7)
- (2E,4E)-Methyl 6-bromohexa-2,4-dienoate (CAS 51010-88-9)
- Des-Ser39-Tirzepatide (CAS CATO-CPTD788936)
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