3-hydroxypyrazine-2-carboxylic acid
Also known as: 2-hydroxy-3-pyrazinecarboxylic acid, 2-hydroxypyrazine-3-carboxylic acid, 3-oxo-3,4-dihydropyrazine-2-carboxylic acid, 2-carboxy-3-hydroxypyrazine, 3-oxo-3,4-dihydro-2-pyrazinecarboxylic acid, 2-oxo-1,2-dihydropyrazine-3-carboxylic acid, 2-oxo-1H-pyrazine-3-carboxylic acid, 3-hydroxy-pyrazine-2-carboxylic acid, 3-oxo-3,4-dihydro-pyrazine-2-carboxylic acid, MFCD00235136
3-hydroxypyrazine-2-carboxylic acid (CAS 20737-42-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H4N2O3 and a molecular weight of 140.097 g/mol. Key properties include a melting point of 218-220 °C, a boiling point of 608.5±55.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 321.8±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20737-42-2
- Jingsj CID
- J-1033494-8
- Molecular Formula
- C5H4N2O3
- Molecular Weight
- 140.097 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 218-220 °C |
|---|---|
| Boiling Point | 608.5±55.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 321.8±31.5 °C |
| Exact Mass | 140.022186 |
| PSA | 83.31000 |
| LogP | -1.17 |
| Vapor Pressure | 0.0±1.8 mmHg at 25°C |
| Refractive Index | 1.639 |
Frequently Asked Questions
What is the CAS number of 3-hydroxypyrazine-2-carboxylic acid?
The CAS number of 3-hydroxypyrazine-2-carboxylic acid is 20737-42-2.
What are the molecular formula and molecular weight of 3-hydroxypyrazine-2-carboxylic acid?
3-hydroxypyrazine-2-carboxylic acid has molecular formula C5H4N2O3 and molecular weight 140.097 g/mol.
What are the upstream and downstream products of 3-hydroxypyrazine-2-carboxylic acid?
For 3-hydroxypyrazine-2-carboxylic acid, Upstream Products: 3-Aminopyrazine-2-carboxylic acid, Lumazine, 3-Hydroxypyrazine-2-carboxamide; Downstream Products: Methyl 3-hydroxypyrazine-2-carboxylate, 3-Chloropyrazine-2-carboxylic acid, Methyl 3-chloropyrazine-2-carboxylate.
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-hydroxypyrazine-2-carboxylic acid (CAS 20737-42-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1033494-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.