5-Chlorothiophene-3-sulfonyl chloride CAS 905277-27-2
| CAS No. | 905277-27-2 |
| Molecular Formula | C4H2Cl2O2S2 |
| Molecular Weight | 217.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5-Chlorothiophene-3-sulfonyl chloride (C4H2Cl2O2S2) 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 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 217.09 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
5-Chlorothiophene-3-sulfonyl chloride (CAS 905277-27-2) is a high-purity analytical reference standard with the molecular formula C4H2Cl2O2S2 and a molecular weight of 217.09 g/mol.
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-Chlorothiophene-3-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 | C4H2Cl2O2S2 |
| Molecular Weight | 217.09 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.) | 1987 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
Related Chlorothiophene Standards
- 4-Chlorothiophene-2-sulfonyl chloride (CAS 1016315-26-6)
- 2-Chlorothiophene-3-sulfonyl chloride (CAS 1186049-82-0)
- 3-Chlorothiophene-2-sulfonyl chloride (CAS 633305-21-2)
- 5-Butyl-4-chlorothiophene-2-carboxylic acid (CAS 1399663-45-6)
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- 5-Chlorothiophene-2-sulfonohydrazide (CAS 78380-28-6)
- 3-Chlorothiophene-2,5-diboronic acid (CAS 2096332-07-7)
- 3-Acetyl-5-chlorothiophene-2-boronic acid (CAS 1451390-79-6)
Recommended Standards
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- 898768-67-7 3-(4-Methylphenyl)-1-[4-(methylsulfanyl)phenyl]propan-1-one DTXSID90644119 (CAS 898768-67-7)
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- Semaglutide impurity 81 (CAS CATO-C4X-222681)
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