3,5-Bis(methylsulfonyl)benzoyl chloride 3,5-bis(methylsulphonyl)benzoyl chloride 90649-99-3 CAS 90649-99-3
| CAS No. | 90649-99-3 |
| Molecular Formula | C9H9ClO5S2 |
| Molecular Weight | 296.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3,5-Bis(methylsulfonyl)benzoyl chloride 3,5-bis(methylsulphonyl)benzoyl chloride 90649-99-3 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.
3,5-Bis(methylsulfonyl)benzoyl chloride 3,5-bis(methylsulphonyl)benzoyl chloride 90649-99-3 (CAS 90649-99-3), molecular formula C9H9ClO5S2 and molecular weight 296.75 g/mol, is a CATO reference standard with documented purity and traceability.
3,5-Bis(methylsulfonyl)benzoyl chloride 3,5-bis(methylsulphonyl)benzoyl chloride 90649-99-3 (C9H9ClO5S2) 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H9ClO5S2 |
| Molecular Weight | 296.75 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
Related Bis Standards
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Recommended Standards
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- 4-methylpentane-1,3-diol (CAS 54876-99-2)
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- Tert-butyl 6-(1-hydroxyethyl)-3,4-dihydroquinoline-1(2H)-carboxylate (CAS 1779807-75-8)
- 6-Bromo-8-methyl-1,4-dihydroquinolin-4-one (CAS 2345601-71-8)
- 2-(Chloromethyl)-5-cyano-4-(difluoromethyl)-3-iodopyridine (CAS 1804731-19-8)
- Ethoxy-methoxy-sulfanylidene-(3,5,6-trichloropyridin-2-yl)oxy-lambda5-phosphane (CAS 159776-80-4)
- Bavachin (CAS 19879-32-4)
- Tirzepatide Impurity 12 (CAS CATO-C4X-324012)
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