3,6-Dimethylthieno[3.2-b]thiophene CAS 56412-11-4
| CAS No. | 56412-11-4 |
| Molecular Formula | C8H8S2 |
| Molecular Weight | 168.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,6-Dimethylthieno[3.2-b]thiophene (CAS 56412-11-4), molecular formula C8H8S2 and molecular weight 168.28 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to sulfur-containing functionality, an aromatic ring system, 3,6-Dimethylthieno[3.2-b]thiophene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 168.28 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 3,6-Dimethylthieno[3.2-b]thiophene under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H8S2 |
| Molecular Weight | 168.28 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Sulfur Atoms | 2 |
Related Dimethylthieno Standards
- 3,4-Dimethylthieno[2,3-b]thiophene (CAS 175202-58-1)
- 6,6-dimethylthieno[2,3-c]furan-4-one (CAS 1951483-73-0)
- 2,6-Dimethylthieno[3,2-d]pyrimidin-4-amine (CAS 1017789-22-8)
- 4,6-Dimethylthieno[2,3-b]pyridin-3(2H)-one (CAS 55023-32-0)
- 5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one (CAS 18593-44-7)
- 5,6-dimethylthieno[2,3-d]pyrimidin-4-amine (CAS 4994-89-2)
- 5,6-Dimethylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione (CAS 35970-82-2)
- 3,4-Dimethylthieno[2,3-b]thiophene-2-carboxaldehyde (CAS 159709-36-1)
Recommended Standards
- Ethyl Linalool (CAS 10339-55-6)
- Trimethylsilylmethanesulfonate (CAS 10090-05-8)
- 2-Methylisoborneol (CAS 2371-42-8)
- Trimethoxysilylmethanethiol (CAS 30817-94-8)
- 3-(5-Amino-1H-1,2,4-triazol-3-yl)propanamide (CAS 1279219-40-7)
- Methyl 3-(6-bromopyridin-2-yl)benzoate (CAS 1094217-61-4)
- 1-Isopropyl-3-methyl-1H-pyrazole-5-carboxamide (CAS 1504560-71-7)
- (Dimethylphenylphosphine)(1,5-cyclooctadiene)[1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene]iridium(I) hexafluorophosphate, min. 98% (CAS 1019853-03-2)
- 4-(3-(1-Methylpiperidin-2-yl)pyridin-2-yl)morpholine (CAS 1352534-16-7)
- Olaparib Impurity 81 (CAS 4122-57-0)
- (1R,2S,3R,4R)-1-(1H-Benzo[d]imidazol-2-yl)pentane-1,2,3,4,5-pentaol (CAS 7770-62-9)
- 5-methylspiro[indoline-3,4-piperidine]-2-one;hydrochloride (CAS 2306270-99-3)
- 1-(4,5-Dihydro-1H-imidazol-2-yl)-5,6-dimethyl-1H-benzo[d]imidazol-2(3H)-one (CAS 791729-22-1)
- Semaglutide impurity 76 (CAS CATO-C4X-222676)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com