Methyl thieno[2,3-b]thiophene-2-carboxylate CAS 20969-37-3
| 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
The occurrence of Methyl thieno[2,3-b]thiophene-2-carboxylate is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Methyl thieno[2,3-b]thiophene-2-carboxylate (CAS 20969-37-3), a certified reference material (molecular formula C8H6O2S2, MW 198.26 g/mol) for analytical method development and quality control.
Based on its molecular formula C8H6O2S2, Methyl thieno[2,3-b]thiophene-2-carboxylate contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 198.26 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Methyl thieno[2,3-b]thiophene-2-carboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
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
- Thieno[3,4-b]thiophen-2-yl acetate (CAS 1823323-50-7)
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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)
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- Morpholino(piperidin-3-yl)methanone (CAS 35090-96-1)
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- 5-Amino-6-chloro-3-methylpyrimidin-4(3H)-one (CAS 63291-60-1)
- (3-Aminopiperidin-1-yl)(2-fluorophenyl)methanone hydrochloride (CAS 1840116-49-5)
- 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)
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