5-Methoxy-2,4-dimethylbenzenesulfonyl chloride CAS 91179-11-2
| CAS No. | 91179-11-2 |
| Molecular Formula | C9H11ClO3S |
| Molecular Weight | 234.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Methoxy-2,4-dimethylbenzenesulfonyl chloride (CAS 91179-11-2) is a high-purity analytical reference standard with the molecular formula C9H11ClO3S and a molecular weight of 234.70 g/mol.
The molecular framework of 5-Methoxy-2,4-dimethylbenzenesulfonyl chloride (C9H11ClO3S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional 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).
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-Methoxy-2,4-dimethylbenzenesulfonyl 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.) | 1983 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Methoxy Standards
- 2-Methoxy-4,6-dimethylbenzene-1-sulfonyl chloride (CAS 1021373-11-4)
- (4-Methoxy-3-methylphenyl)methanesulfonyl chloride (CAS 1194375-45-5)
- 2-Methoxy-2-phenylethane-1-sulfonyl chloride (CAS 1785454-64-9)
- 2-Methoxy-3,5-dimethylbenzene-1-sulfonyl chloride (CAS 749268-53-9)
- 2-Methoxy-4,5-dimethylbenzenesulfonyl chloride (CAS 90416-52-7)
- 4-Methoxy-2,5-dimethylbenzenesulfonyl chloride (CAS 91179-12-3)
- 4-Methoxy-2,6-dimethylbenzenesulfonyl Chloride (CAS 55661-08-0)
- 4-Methoxy-3,5-dimethylbenzene-1-sulfonyl chloride (CAS 75157-75-4)
Recommended Standards
- 5-Ethyl-2-methoxybenzenesulfonyl chloride (CAS 88040-88-4)
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