3-Chlorothieno[2,3-b]thiophene-2-carboxylic acid CAS 39244-08-1
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 39244-08-1 |
| Molecular Formula | C7H3ClO2S2 |
| Molecular Weight | 218.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Chlorothieno[2,3-b]thiophene-2-carboxylic acid (CAS 39244-08-1) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C7H3ClO2S2. Molecular weight: 218.68 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C7H3ClO2S2 |
| Molecular Weight | 218.68 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 2 |
Related Chlorothieno Standards
- 5-Chlorothieno[3,2-b]thiophene-2-carboxylic acid (CAS 70060-15-0)
- 5-Chlorothieno[2,3-d][1,2,3]thiadiazole-6-carboxylic acid (CAS 192878-32-3)
- 4-chlorothieno[3,2-c]pyridine-7-carboxamide (CAS 55040-49-8)
- 4-chlorothieno[3,2-c]pyridine-2-carboxylic acid (CAS 1360891-68-4)
- 7-chlorothieno[2,3-c]pyridine-4-carboxylic acid (CAS 1360959-24-5)
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- 4-chlorothieno[3,2-c]pyridine-7-carboxylic acid (CAS 55040-48-7)
- 7-chlorothieno[3,2-b]pyridine-2-carboxylic acid (CAS 596793-57-6)
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- Semaglutide Impurity 163 (x TFA Salt) (CAS CATO-C4X-2226163)
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