2,4-Dimethylthiophene-3-sulfonyl chloride CAS 208775-27-3
| CAS No. | 208775-27-3 |
| Molecular Formula | C6H7ClO2S2 |
| Molecular Weight | 210.70 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 2,4-Dimethylthiophene-3-sulfonyl chloride (CAS 208775-27-3), a certified reference material (molecular formula C6H7ClO2S2, MW 210.70 g/mol) for analytical method development and quality control.
The molecular framework of 2,4-Dimethylthiophene-3-sulfonyl chloride (C6H7ClO2S2) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C6H7ClO2S2 |
| Molecular Weight | 210.70 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2016 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
Related Dimethylthiophene Standards
- 3,4-Dimethylthiophene-2-sulfonyl chloride (CAS 1227608-07-2)
- 3,5-dimethylthiophene-2-sulfonyl chloride (CAS 1314938-98-1)
- 2,5-Dimethylthiophene-3-sulfonyl Chloride (CAS 97272-04-3)
- 4,5-Dimethylthiophene-2-sulfonyl chloride (CAS 74616-28-7)
- 3,4-Dimethylthiophene-2,5-dicarboxylic acid (CAS 19799-13-4)
- Dimethylthiophene-3,4-dicarboxylic acid (CAS 99595-92-3)
- 4,5-Dimethylthiophene-2-sulfonamide (CAS 140646-53-3)
- 2,5-Dimethylthiophene-3-sulfonamide (CAS 140646-60-2)
Recommended Standards
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- N-(2,3-Dimethylquinoxalin-6-yl)-4-methoxybenzene-1-sulfonamide (CAS 672950-12-8)
- Methyl cyclobut-1-ene-1-carboxylate (CAS 40628-41-9)
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