3,4-Dimethylbenzenesulfonyl chloride CAS 2905-30-8
| CAS No. | 2905-30-8 |
| Molecular Formula | C8H9ClO2S |
| Molecular Weight | 204.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 204.67 g/mol gives 3,4-Dimethylbenzenesulfonyl chloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 3,4-Dimethylbenzenesulfonyl chloride (CAS 2905-30-8), a certified reference material (molecular formula C8H9ClO2S, MW 204.67 g/mol) for analytical method development and quality control.
3,4-Dimethylbenzenesulfonyl chloride (C8H9ClO2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. 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. 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 | C8H9ClO2S |
| Molecular Weight | 204.67 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1957 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Dimethylbenzenesulfonyl Standards
- 2,6-Dimethylbenzenesulfonyl Chloride (CAS 2905-29-5)
- 3,4-Dimethylbenzenesulfonyl isocyanate (CAS 21926-45-4)
- 2,3-Dimethylbenzenesulfonyl fluoride (CAS 60218-20-4)
- 3,5-Dimethylbenzenesulfonyl fluoride (CAS 86146-00-1)
- 2-(3,4-Dimethylbenzenesulfonyl)acetic acid (CAS 85654-12-2)
- 1-(3,4-Dimethylbenzenesulfonyl)butan-2-amine (CAS 1017140-34-9)
- 1-(2,4-Dimethylbenzenesulfonyl)piperazine (CAS 524711-32-8)
- 1-(2,5-Dimethylbenzenesulfonyl)piperazine (CAS 524711-33-9)
Recommended Standards
- 2-Phenylethanesulfonyl Chloride (CAS 4025-71-2)
- 3,5-Dimethylbenzene-1-sulfonyl chloride (CAS 2905-27-3)
- 2-Ethylbenzene-1-sulfonyl chloride (CAS 34586-43-1)
- 3-ethylbenzene-1-sulfonyl chloride (CAS 34586-44-2)
- 4-Fluoro-3-iodo-2-(trifluoromethyl)pyridine (CAS 1227580-61-1)
- Dimethyl (3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)phosphonate (CAS 61726-44-1)
- 2-(6-Chloro-3-methylpyridin-2-yl)propan-2-ol (CAS 2055910-29-5)
- Pleuromutilin (CAS 125-65-5)
- 3852-22-0 Methyl-d3-amine-15N hydrochloride Methylamine-15N hydrochloride (CAS 3852-22-0)
- (1-(3-Fluorophenyl)-1H-1,2,3-triazol-4-yl)methanamine (CAS 944905-66-2)
- 2-Ethylthiazole-4-carboxylic acid (CAS 769124-05-2)
- Ivabradine Impurity 42 (CAS 2511244-97-4)
- tert-Butyl N-{2-oxa-6-azaspiro[3.4]octan-8-yl}carbamate (CAS 1422496-61-4)
- Semaglutide Impurity 151 xTFA (CAS CATO-C4X-2226151)
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