1-ethyl-1H-imidazole-4-sulfonyl chloride CAS 137049-01-5
| CAS No. | 137049-01-5 |
| Molecular Formula | C5H7ClN2O2S |
| Molecular Weight | 194.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 1-ethyl-1H-imidazole-4-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.
1-ethyl-1H-imidazole-4-sulfonyl chloride (CAS 137049-01-5) is a high-purity analytical reference standard with the molecular formula C5H7ClN2O2S and a molecular weight of 194.64 g/mol.
The molecular framework of 1-ethyl-1H-imidazole-4-sulfonyl chloride (C5H7ClN2O2S) is characterized by an amide group, 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 protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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 | C5H7ClN2O2S |
| Molecular Weight | 194.64 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
- 1-Ethyl-1H-pyrazole-3-sulfonyl chloride (CAS 1354706-44-7)
- 1,2-Dimethyl-1H-imidazole-4-sulfonyl chloride (CAS 137049-02-6)
- 1,5-Dimethyl-1h-pyrazole-3-sulfonyl chloride (CAS 1354706-13-0)
- 1-Ethyl-1h-imidazole-5-sulfonyl chloride (CAS 1375473-20-3)
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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