2,5-Dichloro-3-(difluoromethoxy)benzenesulfonyl chloride CAS 1803787-58-7
| CAS No. | 1803787-58-7 |
| Molecular Formula | C7H3Cl3F2O3S |
| Molecular Weight | 311.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2,5-Dichloro-3-(difluoromethoxy)benzenesulfonyl 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.
2,5-Dichloro-3-(difluoromethoxy)benzenesulfonyl chloride (CAS 1803787-58-7), molecular formula C7H3Cl3F2O3S and molecular weight 311.52 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H3Cl3F2O3S, 2,5-Dichloro-3-(difluoromethoxy)benzenesulfonyl chloride contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 311.52 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C7H3Cl3F2O3S |
| Molecular Weight | 311.52 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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.) | 1995 |
| Halogen Content | F/Cl-containing |
| Sulfur Atoms | 1 |
Related Dichloro Standards
- 2,6-Dichloro-4-(difluoromethoxy)benzenesulfonyl chloride (CAS 1803712-48-2)
- 2,6-Dichloro-3-(difluoromethoxy)benzenesulfonyl chloride (CAS 1803787-63-4)
- 3,6-Dichloro-2-(difluoromethoxy)benzenesulfonyl chloride (CAS 1803787-68-9)
- 2,4-Dichloro-3-(difluoromethoxy)benzenesulfonyl chloride (CAS 1803817-79-9)
- 4,5-Dichloro-2-(difluoromethoxy)benzenesulfonyl chloride (CAS 1803817-82-4)
- 2,3-Dichloro-5-(difluoromethoxy)benzenesulfonyl chloride (CAS 1804936-65-9)
- 3,4-Dichloro-2-(difluoromethoxy)benzenesulfonyl chloride (CAS 1805124-22-4)
- 3,5-Dichloro-2-(difluoromethoxy)benzenesulfonyl chloride (CAS 1806275-42-2)
Recommended Standards
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- 4-(1-amino-2-methylpropan-2-yl)oxan-4-ol (CAS 1538916-21-0)
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- Benzyl ((1-(2-hydroxyethyl)piperidin-2-yl)methyl)(methyl)carbamate (CAS 1353972-81-2)
- 1,3-Bis((1H-benzo[d][1,2,3]triazol-1-yl)methyl)thiourea (CAS 28539-03-9)
- Semaglutide impurity 50 (CAS 2773558-66-8)
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