5-(chlorosulfonyl)-2-methylbenzoyl chloride CAS 1426437-45-7
| CAS No. | 1426437-45-7 |
| Molecular Formula | C8H6Cl2O3S |
| Molecular Weight | 253.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 5-(chlorosulfonyl)-2-methylbenzoyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 253.10 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.
5-(chlorosulfonyl)-2-methylbenzoyl chloride (CAS 1426437-45-7), molecular formula C8H6Cl2O3S and molecular weight 253.10 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-(chlorosulfonyl)-2-methylbenzoyl 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.
Physical & Chemical Properties
| Molecular Formula | C8H6Cl2O3S |
| Molecular Weight | 253.10 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.) | 1991 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related chlorosulfonyl Standards
- 3-(Chlorosulfonyl)-4-methylbenzoyl chloride (CAS 547739-67-3)
- Ethyl 2-(chlorosulfonyl)cyclohex-1-enecarboxylate (CAS 243984-26-1)
- methyl 5-(chlorosulfonyl)-1-ethyl-1h-pyraZole-3-carboxylate (CAS 1260659-24-2)
- Ethyl 5-(chlorosulfonyl)-3-methyl-1H-pyrazole-4-carboxylate (CAS 1299471-28-5)
- Ethyl 5-(chlorosulfonyl)-1-methyl-1h-pyrazole-4-carboxylate (CAS 88398-82-7)
- methyl 4-(chlorosulfonyl)-5-ethylfuran-2-carboxylate (CAS 1443981-74-5)
- Methyl 4-(chlorosulfonyl)-2,5-dimethyl-3-furoate (CAS 306936-34-5)
- 5-(chlorosulfonyl)-4-fluoro-2-methylbenzoic acid (CAS 1026030-54-5)
Recommended Standards
- N-(4-bromo-3-methylphenyl)-2-cyanoacetamide (CAS 142555-08-6)
- 1-(5-Bromo-7-methyl-2H-indazol-2-yl)ethan-1-one (CAS 1427460-61-4)
- 1-(6-Bromo-5-methyl-1H-indazol-1-yl)ethan-1-one (CAS 1418736-40-9)
- 1-(5-Bromo-4-methyl-1H-pyrrolo[2,3-b]pyridin-3-yl)ethan-1-one (CAS 1427503-08-9)
- Europium(III) nitrate hydrate (CAS 100587-95-9)
- 4-((2-Nitro-4-(trifluoromethyl)phenoxy)methyl)piperidine hydrochloride (CAS 1219957-05-7)
- 3-(3-Bromo-5-methylthiophen-2-yl)-3-methylbutanoic acid (CAS 1513723-96-0)
- 2,2-Dimethyltetrahydropyran-4-methanamine (CAS 50675-25-7)
- (2,2-Difluorocyclopropyl)methanamine hydrochloride (CAS 1426309-49-0)
- N-(tert-Butyl)-3-(thiazol-2-yloxy)azetidine-1-carboxamide (CAS 1797893-17-4)
- Moxonidine EP Impurity A (CAS 352457-35-3)
- 3,4-Dichloro-3-(3-pyrrolinomethyl) benzophenone (CAS 898749-54-7)
- 4-Chloro-2-hydrazinylbenzoic Acid (CAS 299166-41-9)
- Semaglutide impurity 198 (CAS CATO-C4X-2226198)
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