5-Ethyl-2-methoxybenzenesulfonyl chloride CAS 88040-88-4
| CAS No. | 88040-88-4 |
| Molecular Formula | C9H11ClO3S |
| Molecular Weight | 234.70 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 5-Ethyl-2-methoxybenzenesulfonyl chloride.
CATO supplies 5-Ethyl-2-methoxybenzenesulfonyl chloride (CAS 88040-88-4), a certified reference material (molecular formula C9H11ClO3S, MW 234.70 g/mol) for analytical method development and quality control.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 5-Ethyl-2-methoxybenzenesulfonyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 234.70 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), 5-Ethyl-2-methoxybenzenesulfonyl 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 | C9H11ClO3S |
| Molecular Weight | 234.70 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.) | 1982 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 3-Ethyl-4-methoxybenzenesulfonyl chloride (CAS 84911-01-3)
- 2-(3-Methoxybenzenesulfonyl)acetic Acid (CAS 3938-00-9)
- 3-Acetyl-5-methoxybenzenesulfonyl chloride (CAS 85276-42-2)
- 4-Methoxybenzenesulfonyl isocyanate (CAS 7018-76-0)
- 1-(4-Methoxybenzenesulfonyl)pyrazolidin-3-one (CAS 477850-52-5)
- 3-Methoxybenzenesulfonyl chloride (CAS 10130-74-2)
- 4-Methoxybenzenesulfonyl chloride 98-68-0 Benzenesulfonyl chloride, 4-methoxy- Benzenesulfonyl chloride, p-methoxy- NSC-403292 NSC403292 p-Anisylsulfonyl chloride p-Methoxybenzenesulfonyl chloride p-Methoxyphenylsulfonyl chloride (CAS 98-68-0)
- 3-(4-Methoxybenzenesulfonyl)-2-methylpropanoic acid (CAS 205504-66-1)
Recommended Standards
- 5-Chloro-2-(thiophen-2-yl)-1H-benzo[d]imidazole (CAS 27503-77-1)
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- 5-(5-Chlorothiophen-2-yl)-1H-pyrrolo[2,3-b]pyridine (CAS 611205-16-4)
- 6-(4-Chlorophenyl)imidazo[2,1-b]thiazole, 97% (CAS 7025-30-1)
- 3-[(2,6-Dichlorophenyl)methyl]-2-methyl-1-[(4-methylphenyl)methyl]-1,4-dihydropyridin-4-one (CAS 339104-32-4)
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