4-(3-Oxobenzo[d]isothiazol-2(3H)-yl)benzoic acid CAS 78471-84-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 78471-84-8 |
| Molecular Formula | C14H9NO3S |
| Molecular Weight | 271.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-(3-Oxobenzo[d]isothiazol-2(3H)-yl)benzoic acid (CAS 78471-84-8), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C14H9NO3S. Molecular weight: 271.29 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C14H9NO3S |
| Molecular Weight | 271.29 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Oxobenzo Standards
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- 2-(5-Oxobenzo[h]quinolin-6(5H)-ylidene)hydrazinecarboxamide (CAS 88346-09-2)
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Recommended Standards
- 3-Nitro-2-(2-(thiophen-2-yl)vinyl)imidazo[1,2-a]pyridine (CAS 62223-45-4)
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- 3-Amino-N-cyclopropyl-4-methyl-5-nitrobenzenesulfonamide (CAS 695204-63-8)
- Tirofiban Impurity 58 (CAS 622-26-4)
- (5,6,7-Trimethyl-1,8-naphthyridin-2-yl)methanamine (CAS 1556049-83-2)
- 17785-41-0 4-Amino-N-cyclopropylbenzenesulfonamide C9H12N2O2S V3854 (CAS 17785-41-0)
- 1-(Tert-butyl)-1H-pyrazol-3-amine (CAS 1152980-49-8)
- Coumafuryl (CAS 117-52-2)
- (+/-)-Clopidogrel hydrochloride DISCONTINUED (CAS 130209-90-4)
- D-Ile27-Tirzepatide (CAS CATO-CPTD788907)
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