4-Formyl-1-methyl-1H-pyrazole-5-sulfonyl chloride CAS 2138573-84-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 2138573-84-7 |
| Molecular Formula | C5H5ClN2O3S |
| Molecular Weight | 208.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Formyl-1-methyl-1H-pyrazole-5-sulfonyl chloride (CAS 2138573-84-7) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C5H5ClN2O3S. Molecular weight: 208.62 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C5H5ClN2O3S |
| Molecular Weight | 208.62 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 methanol, ethanol, DMSO, water |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 4-Fluoro-1-naphthalenecarbonyl chloride (CAS 56886-72-7)
- 5-Chloro-2'-fluoro-2,3'-bipyridine (CAS 942206-10-2)
- 4-Chloro-6-(4-fluoro-phenyl)-pyrimidine (CAS 85979-61-9)
- 2-((4,6-Di(pyrrolidin-1-yl)-1,3,5-triazin-2-yl)amino)ethanol (CAS 401605-51-4)
- 5-(2,4,5-Trimethylpiperazin-1-yl)pyridin-2-amine (CAS 866620-38-4)
- Dihydroformononetin (CAS 4626-22-6)
- 6-Chloro-2-iodo-9-methyl-9H-purine (CAS 247193-36-8)
- 2,4,5-Trimethyl-N-(1h-pyrazol-4-yl)furan-3-carboxamide (CAS 1154945-91-1)
- 6-Iodoimidazo[1,2-a]pyridine-2-carbohydrazide (CAS 860784-46-9)
- Semaglutide impurity 202 (CAS CATO-C4X-2226202)
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 13829788188 / jacky.chen@cato-chem.com