3-(2-Chlorophenoxy)benzenesulfonylchloride CAS 474947-79-0
| CAS No. | 474947-79-0 |
| Molecular Formula | C12H8Cl2O3S |
| Molecular Weight | 303.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(2-Chlorophenoxy)benzenesulfonylchloride (CAS 474947-79-0), molecular formula C12H8Cl2O3S and molecular weight 303.16 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H8Cl2O3S, 3-(2-Chlorophenoxy)benzenesulfonylchloride contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 303.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C12H8Cl2O3S |
| Molecular Weight | 303.16 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chlorophenoxy Standards
- 4-(4-Chlorophenoxy)benzene-1-sulfonyl chloride (CAS 191327-30-7)
- 3-(4-Chlorophenoxy)benzene-1-sulfonyl chloride (CAS 501697-55-8)
- 4-(3-Chlorophenoxy)benzene-1-sulfonyl chloride (CAS 815576-24-0)
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Recommended Standards
- 3-((2,4-Dichlorobenzyl)oxy)thiophene-2-carboxylic acid (CAS 343376-05-6)
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- 2,5-Dichloro-N-(pyridin-2-yl)benzenesulfonamide (CAS 314051-88-2)
- 4-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)morpholin-3-one (CAS 928631-04-3)
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- 4-Methyl-N-(pentan-3-yl)cyclohexan-1-amine (CAS 1019472-56-0)
- Ethyl 2-(4-hydroxythiazol-2-yl)acetate (CAS 79878-57-2)
- 2-Hydroxypyrimidine-5-boronic Acid (CAS 373384-19-1)
- 4-Chlorobenzo[c][1,2,5]thiadiazole (CAS 2207-28-5)
- BDP TMR carboxylic acid (CAS 287384-28-5)
- 2-Nitroacridin-9(10H)-one (CAS 7251-00-5)
- 3-((1,1-Dioxidobenzo[d]isothiazol-3-yl)amino)propyl 2-bromobutanoate (CAS 591212-97-4)
- 2,3-Dihydroxy-7-sulphamoyl-benzo[f]quinoxaline (CAS 118876-57-6)
- Sperm Activating Peptide, Sea Urchin (CAS 140653-27-6)
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