Thieno[3,4-b]pyrazine
噻吩并[3,4-b]吡嗪
Also known as: 2',3'-Pyrazinothiophene, thieno<3,4-b>pyrazine
Thieno[3,4-b]pyrazine (CAS 272-43-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H4N2S and a molecular weight of 136.17400 g/mol. It is also known as 2',3'-Pyrazinothiophene and thieno<3,4-b>pyrazine. Key properties include a melting point of 47-48ºC, a boiling point of 253ºC, a density of 1.368 and a flash point of 112ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 272-43-5
- Jingsj CID
- J-1047998-8
- Molecular Formula
- C6H4N2S
- Chinese Name
- 噻吩并[3,4-b]吡嗪
- Molecular Weight
- 136.17400 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 47-48ºC |
|---|---|
| Boiling Point | 253ºC |
| Density | 1.368 |
| Flash Point | 112ºC |
Frequently Asked Questions
What is the CAS number of Thieno[3,4-b]pyrazine?
The CAS number of Thieno[3,4-b]pyrazine is 272-43-5.
What are the molecular formula and molecular weight of Thieno[3,4-b]pyrazine?
Thieno[3,4-b]pyrazine has molecular formula C6H4N2S and molecular weight 136.17400 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Thieno[3,4-b]pyrazine (CAS 272-43-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1047998-8 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.