Ethyl 3-oxobenzo[d]isothiazole-2(3H)-carboxylate 1,1-dioxide CAS 6971-09-1
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 6971-09-1 |
| Molecular Formula | C10H9NO5S |
| Molecular Weight | 255.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ethyl 3-oxobenzo[d]isothiazole-2(3H)-carboxylate 1,1-dioxide (CAS 6971-09-1), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C10H9NO5S. Molecular weight: 255.25 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C10H9NO5S |
| Molecular Weight | 255.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
- Ethyl 2-(isocyanatosulfonyl)benzoate (CAS 77375-79-2)
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- 5-(4-Acetylphenoxy)furan-2-carboxylic acid (CAS 1263213-08-6)
- 5-Bromopyrimidine-2,4-diol (CAS 5909-23-9)
- Melphalan Impurity 33 (CAS CATO-C4X-198833)
- Oclacitinib Impurity 30 (CAS CATO-C4X-301830)
- 1-(2-Ethoxyphenyl)-3-(2-(thiophen-3-yl)benzyl)urea (CAS 1797719-74-4)
- 2-(3-Formyl-5-methylphenyl)acetonitrile (CAS 2830620-76-1)
- Tirzepatide-d7 Ditrifluoroacetate (CAS CATO-CPTD788698)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com