Thieno[2,3-b]pyrazine

噻吩并[2,3-b]吡嗪

Also known as: thieno<2,3-b>pyrazine, thieno<2,3-b>pyrazin, thienopyrazine

Thieno[2,3-b]pyrazine (CAS 56088-28-9) 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 136.174 g/mol. It is also known as thieno<2,3-b>pyrazine, thieno<2,3-b>pyrazin and thienopyrazine. Key properties include a boiling point of 241.4±20.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 104.4±12.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
56088-28-9
Jingsj CID
J-1365783-3
Molecular Formula
C6H4N2S
Chinese Name
噻吩并[2,3-b]吡嗪
Molecular Weight
136.174 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point241.4±20.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point104.4±12.2 °C

Frequently Asked Questions

What is the CAS number of Thieno[2,3-b]pyrazine?

The CAS number of Thieno[2,3-b]pyrazine is 56088-28-9.

What are the molecular formula and molecular weight of Thieno[2,3-b]pyrazine?

Thieno[2,3-b]pyrazine has molecular formula C6H4N2S and molecular weight 136.174 g/mol.

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]pyrazine (CAS 56088-28-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1365783-3 (accessed 2026-10-22).

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