4-Methyl-2,5-dihydrothiophene-3-sulfonyl chloride 1,1-dioxide CAS 125287-41-4
| CAS No. | 125287-41-4 |
| Molecular Formula | C5H7ClO4S2 |
| Molecular Weight | 230.69 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 4-Methyl-2,5-dihydrothiophene-3-sulfonyl chloride 1,1-dioxide (CAS 125287-41-4), a certified reference material (molecular formula C5H7ClO4S2, MW 230.69 g/mol) for analytical method development and quality control.
4-Methyl-2,5-dihydrothiophene-3-sulfonyl chloride 1,1-dioxide (C5H7ClO4S2) contains a carbohydrate-derived structure, a sulfone group, chlorine substitution. It is notably hygroscopic, 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. 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 | C5H7ClO4S2 |
| Molecular Weight | 230.69 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, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
Related Methyl Standards
- 4-Methyl-2,3-dihydrothiophene-3-sulfonyl chloride 1,1-dioxide (CAS 112161-65-6)
- 2,5-Dihydrothiophene-3-sulfonyl chloride 1,1-dioxide (CAS 112161-61-2)
- 3-Phenyl-2,5-dihydrothiophene 1,1-dioxide (CAS 57465-40-4)
- Methyl 2,5-dihydrothiophene-3-carboxylate 1,1-dioxide (CAS 67488-50-0)
- 2,5-Dihydrothiophene-3,4-dicarboxylic Acid (CAS 20688-07-7)
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- 3-Methyl-2,5-dihydrothiophene-1,1-dioxide (CAS 1193-10-8)
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