4-Chloro-3-methylthiophene-2-sulfonyl chloride CAS 2855942-84-4
| CAS No. | 2855942-84-4 |
| Molecular Formula | C5H4Cl2O2S2 |
| Molecular Weight | 231.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4-Chloro-3-methylthiophene-2-sulfonyl chloride under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
4-Chloro-3-methylthiophene-2-sulfonyl chloride (CAS 2855942-84-4), molecular formula C5H4Cl2O2S2 and molecular weight 231.12 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Chloro-3-methylthiophene-2-sulfonyl chloride (C5H4Cl2O2S2) 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 231.12 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.
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 | C5H4Cl2O2S2 |
| Molecular Weight | 231.12 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.) | 2003 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
Related Chloro Standards
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- Methyl 3-(cyclobutylamino)benzoate (CAS 1249936-35-3)
- cis-4-(Boc-amino)cyclohexanecarbaldehyde (CAS 181308-56-5)
- (1-(4-Bromo-3-fluorophenyl)cyclobutyl)methanamine (CAS 1891903-55-1)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com