Pyrazine-2-amidoxime
Also known as: N'-Hydroxy-2-pyrazinecarboximidamide, N'-Hydroxypyrazine-2-carboximidamide, N-Hydroxy-2-pyrazinecarboximidamide, Pyrazine-2-carboxamide oxime, Pyrazine-2-carboxamidoxime, N-Hydroxypyrazine-2-carboxamidine, 2-Pyrazinecarboximidamide, N-hydroxy-, RARECHEM BG FB 0042, BUTTPARK 32\04-58
Pyrazine-2-amidoxime (CAS 51285-05-3) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C5H6N4O and a molecular weight of 138.127 g/mol. Key properties include a melting point of 179-182ºC, a boiling point of 370.3±45.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 177.8±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 51285-05-3
- Jingsj CID
- J-1069171-1
- Molecular Formula
- C5H6N4O
- Molecular Weight
- 138.127 g/mol
- Category
- Organic Bases
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 179-182ºC |
|---|---|
| Boiling Point | 370.3±45.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 177.8±28.7 °C |
| Exact Mass | 138.054153 |
| PSA | 84.39000 |
| LogP | -0.52 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.680 |
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of Pyrazine-2-amidoxime?
The CAS number of Pyrazine-2-amidoxime is 51285-05-3.
What are the molecular formula and molecular weight of Pyrazine-2-amidoxime?
Pyrazine-2-amidoxime has molecular formula C5H6N4O and molecular weight 138.127 g/mol.
What are the upstream and downstream products of Pyrazine-2-amidoxime?
For Pyrazine-2-amidoxime, Upstream Products: 2-Cyanopyrazine; Downstream Products: Pyrazine, 2-[5-(chloromethyl)-1,2,4-oxadiazol-3-yl]-.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Pyrazine-2-amidoxime (CAS 51285-05-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1069171-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.