Methyl thieno[2,3-b]thiophene-2-carboxylate CAS 20969-37-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 20969-37-3 |
| Molecular Formula | C8H6O2S2 |
| Molecular Weight | 198.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl thieno[2,3-b]thiophene-2-carboxylate (CAS 20969-37-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C8H6O2S2. Molecular weight: 198.26 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C8H6O2S2 |
| Molecular Weight | 198.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Sulfur Atoms | 2 |
Related Methyl Standards
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- Thieno[3,2-b]thiophene-2-carbohydrazide (CAS 685114-87-8)
- Methyl thieno[2,3-d]thiazole-5-carboxylate (CAS 1909316-58-0)
- methyl thieno[2,3-d][1,2,3]thiadiazole-6-carboxylate (CAS 192878-28-7)
- Thieno[2,3-b]thiophene-2,5-dicarbaldehyde (CAS 41784-82-1)
- THieno[3,2-d]pyrimidine, 2,4-dimethoxy- (CAS 16229-02-0)
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Recommended Standards
- methyl cinnoline-6-carboxylate (CAS 318276-74-3)
- methyl[phenyl(pyridin-2-yl)methyl]amine (CAS 4372-44-5)
- Methyl 6-hydroxy-2,2,6-trimethylhept-4-ynoate (CAS 2718220-25-6)
- 4-(2-amino-1,3-thiazol-4-yl)-1H-pyrrole-2-carboxylic acid (CAS 929974-96-9)
- 5-Amino-6-chloro-3-methylpyrimidin-4(3H)-one (CAS 63291-60-1)
- 4-Boc-piperazine-2-carboxylic acid (CAS 128019-59-0)
- Resmetirom Impurity 61 (CAS CATO-C4X-291261)
- (R)-1-(3-bromo-5-chlorophenyl)-2,2,2-trifluoroethan-1-amine (CAS 1344458-89-4)
- N-fluoro-3,5-dichloropyridiniumtetrafluoroborate (CAS 109705-15-9)
- Gastric Inhibitory Polypeptide (1-30) amide (porcine) (CAS 134846-93-8)
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