3-Chloro-6-nitrobenzo[b]thiophene-2-carboxylic acid CAS 34576-91-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 34576-91-5 |
| Molecular Formula | C9H4ClNO4S |
| Molecular Weight | 257.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-Chloro-6-nitrobenzo[b]thiophene-2-carboxylic acid (CAS 34576-91-5), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C9H4ClNO4S. Molecular weight: 257.65 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C9H4ClNO4S |
| Molecular Weight | 257.65 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 |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloro Standards
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Recommended Standards
- 3-Chloro-4-nitro-1-benzothiophene-2-carboxylic acid (CAS 870540-56-0)
- Methyl (E)-4-((3-chloro-4-fluorophenyl)amino)-4-oxobut-2-enoate (CAS 724736-35-0)
- 1-(4-Chloro-2-fluorophenyl)-5-oxopyrrolidine-3-carboxylic acid (CAS 926206-35-1)
- 1-(2-(Phenylthio)ethyl)piperazine (CAS 73446-34-1)
- 3-Methyl-1-(2,4,5-trimethylphenyl)butan-1-one (CAS 10425-88-4)
- 1-[4-hydroxy-3-(propan-2-yl)phenyl]-2-methylpropan-1-one (CAS 1508439-94-8)
- 1-Butyl-4-hydroxy-N-(6-methylbenzo[d]thiazol-2-yl)-2-oxo-1,2-dihydroquinoline-3-carboxamide (CAS 423145-59-9)
- Benzhexol Impurity 9 (CAS 1193-81-3)
- (R)-1-(4-bromopyridin-2-yl)ethan-1-amine hydrochloride (CAS 1646565-88-9)
- Semaglutide Impurity 160 (x TFA Salt) (CAS CATO-C4X-2226160)
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