3-Oxo-3,4-dihydro-2-pyrazinecarbonitrile
1,2-二氢-2-氧代-3-氰基吡嗪
Also known as: 1,2-Dihydro-2-oxo-3-pyrazinecarbonitrile, 3-Oxo-3,4-dihydropyrazine-2-carbonitrile, 2-Pyrazinecarbonitrile, 3,4-dihydro-3-oxo, 2-oxo-1H-pyrazine-3-carbonitrile, 3-cyanopyrazin-2-one, 3-hydroxypyrazine-2-carbonitrile, Favipiravir Impurity 26
3-Oxo-3,4-dihydro-2-pyrazinecarbonitrile (CAS 81411-78-1) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H3N3O and a molecular weight of 121.09700 g/mol. It is also known as 1,2-Dihydro-2-oxo-3-pyrazinecarbonitrile, 3-Oxo-3,4-dihydropyrazine-2-carbonitrile and 2-Pyrazinecarbonitrile, 3,4-dihydro-3-oxo. Key properties include a melting point of 192-194ºC and a density of 1.38 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 81411-78-1
- Jingsj CID
- J-1127140-6
- Molecular Formula
- C5H3N3O
- Chinese Name
- 1,2-二氢-2-氧代-3-氰基吡嗪
- Molecular Weight
- 121.09700 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 192-194ºC |
|---|---|
| Density | 1.38 g/cm3 |
Frequently Asked Questions
What is the CAS number of 3-Oxo-3,4-dihydro-2-pyrazinecarbonitrile?
The CAS number of 3-Oxo-3,4-dihydro-2-pyrazinecarbonitrile is 81411-78-1.
What are the molecular formula and molecular weight of 3-Oxo-3,4-dihydro-2-pyrazinecarbonitrile?
3-Oxo-3,4-dihydro-2-pyrazinecarbonitrile has molecular formula C5H3N3O and molecular weight 121.09700 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Oxo-3,4-dihydro-2-pyrazinecarbonitrile (CAS 81411-78-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1127140-6 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.