Thieno[2,3-b]thiophene
噻吩[2,3-b]噻吩
Also known as: 1,6-Dithiapentalene, 1,6-Thiophthene, Polythieno[2,3-b]thiophene, Thiophthene
Thieno[2,3-b]thiophene (CAS 250-84-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H4S2 and a molecular weight of 140.226 g/mol. It is also known as 1,6-Dithiapentalene, 1,6-Thiophthene and Polythieno[2,3-b]thiophene. Key properties include a melting point of 7 °C, a boiling point of 225.9±13.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 64.3±6.0 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 250-84-0
- Jingsj CID
- J-1497879-5
- Molecular Formula
- C6H4S2
- Chinese Name
- 噻吩[2,3-b]噻吩
- Molecular Weight
- 140.226 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 7 °C |
|---|---|
| Boiling Point | 225.9±13.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 64.3±6.0 °C |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of Thieno[2,3-b]thiophene?
The CAS number of Thieno[2,3-b]thiophene is 250-84-0.
What are the molecular formula and molecular weight of Thieno[2,3-b]thiophene?
Thieno[2,3-b]thiophene has molecular formula C6H4S2 and molecular weight 140.226 g/mol.
Is Thieno[2,3-b]thiophene hazardous?
Thieno[2,3-b]thiophene has GHS signal word Warning.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Thieno[2,3-b]thiophene (CAS 250-84-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1497879-5 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.