3,5-Dibromo-2-hydroxypyrazine

3,5-二溴-2-羟基吡嗪

Also known as: 3,5-dibromo-pyrazin-2-ol, 3,5-dibromopyrazin-2-ol, 2-Hydroxy-3,5-dibromopyrazine, 3,5-Dibromo-2(1H)-pyrazinone, 3,5-Dibromo-2-pyrazinol, 3,5-dibromo-1H-pyrazin-2-one, 2(1H)-Pyrazinone, 3,5-dibromo-, 3,5-bromopyrazin-2-ol

3,5-Dibromo-2-hydroxypyrazine (CAS 21943-15-7) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C4H2Br2N2O and a molecular weight of 253.880 g/mol. It is also known as 3,5-dibromo-pyrazin-2-ol, 3,5-dibromopyrazin-2-ol and 2-Hydroxy-3,5-dibromopyrazine. Key properties include a boiling point of 430.5±40.0 °C at 760 mmHg, a density of 2.4±0.1 g/cm3 and a flash point of 214.2±27.3 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
21943-15-7
Jingsj CID
J-1179407-9
Molecular Formula
C4H2Br2N2O
Chinese Name
3,5-二溴-2-羟基吡嗪
Molecular Weight
253.880 g/mol
Category
Organohalogen Compounds
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point430.5±40.0 °C at 760 mmHg
Density2.4±0.1 g/cm3
Flash Point214.2±27.3 °C

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger

Frequently Asked Questions

What is the CAS number of 3,5-Dibromo-2-hydroxypyrazine?

The CAS number of 3,5-Dibromo-2-hydroxypyrazine is 21943-15-7.

What are the molecular formula and molecular weight of 3,5-Dibromo-2-hydroxypyrazine?

3,5-Dibromo-2-hydroxypyrazine has molecular formula C4H2Br2N2O and molecular weight 253.880 g/mol.

Is 3,5-Dibromo-2-hydroxypyrazine hazardous?

3,5-Dibromo-2-hydroxypyrazine has GHS signal word Danger.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "3,5-Dibromo-2-hydroxypyrazine (CAS 21943-15-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1179407-9 (accessed 2026-10-22).

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