2731AF 4-Methoxy-2,3-dimethylbenzenesulfonyl chloride 90416-51-6 C9H11ClO3S CAS 90416-51-6
| CAS No. | 90416-51-6 |
| Molecular Formula | C9H11ClO3S |
| Molecular Weight | 234.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 2731AF 4-Methoxy-2,3-dimethylbenzenesulfonyl chloride 90416-51-6 C9H11ClO3S (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).
2731AF 4-Methoxy-2,3-dimethylbenzenesulfonyl chloride 90416-51-6 C9H11ClO3S (CAS 90416-51-6), molecular formula C9H11ClO3S and molecular weight 234.70 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), 2731AF 4-Methoxy-2,3-dimethylbenzenesulfonyl chloride 90416-51-6 C9H11ClO3S 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 AF Standards
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- 4-Methoxy-3,5-dimethylbenzene-1-sulfonyl chloride (CAS 75157-75-4)
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