7-chlorobenzothiophene-2-sulfonyl chloride CAS 128852-08-4
| CAS No. | 128852-08-4 |
| Molecular Formula | C8H12Cl2O2S2 |
| Molecular Weight | 275.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
7-chlorobenzothiophene-2-sulfonyl chloride (CAS 128852-08-4), molecular formula C8H12Cl2O2S2 and molecular weight 275.22 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 7-chlorobenzothiophene-2-sulfonyl chloride (C8H12Cl2O2S2) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 275.22 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 7-chlorobenzothiophene-2-sulfonyl 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 | C8H12Cl2O2S2 |
| Molecular Weight | 275.22 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 | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
Related chlorobenzothiophene Standards
- 6-chlorobenzothiophene-2-sulfonyl chloride (CAS 128852-07-3)
- 7-chlorobenzothiophene-3-sulfonyl chloride (CAS 30214-09-6)
- 5-Chlorobenzothiophene-2-sulfonyl Chloride (CAS 128851-98-9)
- 3-Chlorobenzothiophene-2-carbonyl chloride 3-chlorobenzo[b]thiophen-2-carbonyl chloride 3-chlorobenzo[b]thiophene-2-carbonyl chloride 3-chloro-1-benzothiophene-2-carbonyl chloride 3-chloro-benzo[b]thiophene-2-carbonyl chloride 21815-91-8 (CAS 21815-91-8)
- Methyl 6-Chlorobenzothiophene-2-carboxylate (CAS 104795-85-9)
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