3-Cyano-1,2-dihydro-4-hydroxy-2-oxopyridine
Also known as: 1,2-Dihydro-4-hydroxy-2-oxopyridine-3-carbonitrile, 3-Cyano-4-hydroxypyridin-2(1H)-one, 4-Hydroxy-2-oxo-1,2-dihydropyridine-3-carbonitrile, 3-Pyridinecarbonitrile, 1,2-dihydro-4-hydroxy-2-oxo-, NSC 409910
3-Cyano-1,2-dihydro-4-hydroxy-2-oxopyridine (CAS 5657-64-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H4N2O2 and a molecular weight of 136.108 g/mol. Key properties include a boiling point of 301.2±42.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 136.0±27.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 5657-64-7
- Jingsj CID
- J-1033028-6
- Molecular Formula
- C6H4N2O2
- Molecular Weight
- 136.108 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 301.2±42.0 °C at 760 mmHg |
|---|---|
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 136.0±27.9 °C |
| Exact Mass | 136.027283 |
| PSA | 76.88000 |
| LogP | -1.13 |
| Vapor Pressure | 0.0±1.4 mmHg at 25°C |
| Refractive Index | 1.621 |
Customs & Trade Information
| HS Code | 2933399090 |
|---|---|
| Summary | 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. 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 3-Cyano-1,2-dihydro-4-hydroxy-2-oxopyridine?
The CAS number of 3-Cyano-1,2-dihydro-4-hydroxy-2-oxopyridine is 5657-64-7.
What are the molecular formula and molecular weight of 3-Cyano-1,2-dihydro-4-hydroxy-2-oxopyridine?
3-Cyano-1,2-dihydro-4-hydroxy-2-oxopyridine has molecular formula C6H4N2O2 and molecular weight 136.108 g/mol.
What are the upstream and downstream products of 3-Cyano-1,2-dihydro-4-hydroxy-2-oxopyridine?
For 3-Cyano-1,2-dihydro-4-hydroxy-2-oxopyridine, Downstream Products: 2,4-Dihydroxypyridine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Cyano-1,2-dihydro-4-hydroxy-2-oxopyridine (CAS 5657-64-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1033028-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.