3-Methylisothiazole-5-sulfonyl chloride CAS 1355334-86-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1355334-86-9 |
| Molecular Formula | C4H4ClNO2S2 |
| Molecular Weight | 197.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-Methylisothiazole-5-sulfonyl chloride (CAS 1355334-86-9), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C4H4ClNO2S2. Molecular weight: 197.66 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C4H4ClNO2S2 |
| Molecular Weight | 197.66 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Methylisothiazole Standards
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- 3-Methylisothiazole-4-sulfonic acid (CAS 933-85-7)
- 3-Methylisothiazole-5-sulfonamide (CAS 1022128-99-9)
- Ethyl 3-methylisothiazole-4-carboxylate (CAS 15901-51-6)
- Methyl 3-methylisothiazole-5-carboxylate (CAS 15901-54-9)
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- 3-Methylisothiazole-4-carbohydrazide (CAS 89179-69-1)
Recommended Standards
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- (2-Bromo-3-fluoropyridin-4-yl)boronic acid (CAS 2096338-76-8)
- 2-[(5-Chloro-2-pyrazinyl)(methyl)amino]-1-ethanol (CAS 1823331-14-1)
- [Tyr0] Fibrinopeptide A, human (CAS 103226-11-5)
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