3,4-dimethylthieno[2,3-b]thiophene-2-carbaldehyde
3,4-二甲基噻吩并[2,3-b]噻吩-2-甲醛
Also known as: 2-formyl-3,4-dimethylthieno[2,3-b]thiophene, 3,4-Dimethyl-thieno[2,3-b]thiophene-2-carbaldehyde, 3,4-DIMETHYLTHIENO[2,3-B]THIOPHENE-2-CARBALDEHYDE, 3,4-DIMETHYLTHIENO[2,3-B]THIOPHENE-2-CARBOXALDEHYDE, 3,4-Dimethyl-2-formylthieno[2,3-b]thiophene, 3,4-Dimethylthieno[2,3-b]thiophene-2-carboxaldehyde, BUTTPARK 92\04-79
3,4-dimethylthieno[2,3-b]thiophene-2-carbaldehyde (CAS 159709-36-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H8OS2 and a molecular weight of 196.28900 g/mol. It is also known as 2-formyl-3,4-dimethylthieno[2,3-b]thiophene, 3,4-Dimethyl-thieno[2,3-b]thiophene-2-carbaldehyde and 3,4-DIMETHYLTHIENO[2,3-B]THIOPHENE-2-CARBALDEHYDE. Key properties include a melting point of 147-149ºC, a boiling point of 346.9ºC at 760mmHg, a density of 1.337g/cm3 and a flash point of 163.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 159709-36-1
- Jingsj CID
- J-1411821-8
- Molecular Formula
- C9H8OS2
- Chinese Name
- 3,4-二甲基噻吩并[2,3-b]噻吩-2-甲醛
- Molecular Weight
- 196.28900 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 147-149ºC |
|---|---|
| Boiling Point | 346.9ºC at 760mmHg |
| Density | 1.337g/cm3 |
| Flash Point | 163.6ºC |
| Exact Mass | 196.00200 |
| PSA | 73.55000 |
| LogP | 3.39210 |
| Vapor Pressure | 5.58E-05mmHg at 25°C |
| Refractive Index | 1.708 |
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 3,4-dimethylthieno[2,3-b]thiophene-2-carbaldehyde?
The CAS number of 3,4-dimethylthieno[2,3-b]thiophene-2-carbaldehyde is 159709-36-1.
What are the molecular formula and molecular weight of 3,4-dimethylthieno[2,3-b]thiophene-2-carbaldehyde?
3,4-dimethylthieno[2,3-b]thiophene-2-carbaldehyde has molecular formula C9H8OS2 and molecular weight 196.28900 g/mol.
What are the upstream and downstream products of 3,4-dimethylthieno[2,3-b]thiophene-2-carbaldehyde?
For 3,4-dimethylthieno[2,3-b]thiophene-2-carbaldehyde, Upstream Products: N,N-Dimethylformamide, 3,4-dimethylthieno[2,3-b]thiophene.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,4-dimethylthieno[2,3-b]thiophene-2-carbaldehyde (CAS 159709-36-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1411821-8 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.