2,4-Dichloro-3-(difluoromethoxy)benzenesulfonyl chloride CAS 1803817-79-9
| CAS No. | 1803817-79-9 |
| Molecular Formula | C7H3Cl3F2O3S |
| Molecular Weight | 311.52 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 2,4-Dichloro-3-(difluoromethoxy)benzenesulfonyl chloride under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
2,4-Dichloro-3-(difluoromethoxy)benzenesulfonyl chloride (CAS 1803817-79-9) is a high-purity analytical reference standard with the molecular formula C7H3Cl3F2O3S and a molecular weight of 311.52 g/mol.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system, 2,4-Dichloro-3-(difluoromethoxy)benzenesulfonyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 311.52 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | 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)
- 2,5-Dichloro-3-(difluoromethoxy)benzenesulfonyl chloride (CAS 1803787-58-7)
- 2,6-Dichloro-3-(difluoromethoxy)benzenesulfonyl chloride (CAS 1803787-63-4)
- 3,6-Dichloro-2-(difluoromethoxy)benzenesulfonyl chloride (CAS 1803787-68-9)
- 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
- Cyanomethyl [3-(trimethoxysilyl)propyl] trithiocarbonate (CAS 1050502-37-8)
- 2,4-Dichloro-5-(difluoromethoxy)benzenesulfonyl chloride (CAS 1807036-02-7)
- 17-Methyl-5a-androstane-3b,17b-diol-d5 (CAS 853904-65-1)
- 2,4-Dichloro-6-(difluoromethoxy)benzenesulfonyl chloride (CAS 1807036-14-1)
- tert-Butyl 4-(4-iodophenoxy)piperidine-1-carboxylate (CAS 346617-98-9)
- 3-(4-Methoxyphenyl)-2-methyl-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 1204298-05-4)
- (1-Methyl-1H-benzoimidazol-2-yl)-methanol (CAS 7467-35-8)
- 1,1'-(4-Methoxy-1,3-phenylene)bis(1H-pyrrole-2,5-dione) (CAS 6327-81-7)
- Methyl 5-methyl-2-(methylamino)thiazole-4-carboxylate (CAS 1552600-99-3)
- (R)-2-((R)-2-((R)-3-(4-Hydroxyphenyl)-2-((R)-pyrrolidine-2-carboxamido)propanamido)-3-methylbutanamido)-3-methylbutanoic acid (CAS 628282-01-9)
- (3E,13E)-Octadeca-3,13-dien-1-yl acetate (CAS 57491-34-6)
- Alvocidib (Flavopiridol) (CAS 146426-40-6)
- N-[3-(Trifluoromethyl)phenyl]-4-{4-[3-(trifluoromethyl)phenyl]-1,3-thiazol-2-yl}benzamide (CAS 321430-21-1)
- Semaglutide Impurity 166 (CAS 1395881-03-4)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com