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

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Physicochemical Properties

Melting Point147-149ºC
Boiling Point346.9ºC at 760mmHg
Density1.337g/cm3
Flash Point163.6ºC

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.

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 2026-10-26).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.