5-Hydroxypyrazine-2-carboxamide

Also known as: 5-Hydroxypyrazinamide, 5-Hydroxypyrazinecarboxamide, 5-Oxo-4,5-dihydropyrazine-2-carboxamide, 6-Oxo-1H-pyrazine-3-carboxamide, Pyrazinecarboxamide, 4,5-dihydro-5-oxo, 2-Pyrazinecarboxamide, 4,5-dihydro-5-oxo-, 2-Carbamoyl-5-hydroxypyrazine, 2-Carboxamido-5-hydroxypyrazine, 5-hydroxy-pyrazine-2-carboxylic acid amide

5-Hydroxypyrazine-2-carboxamide (CAS 13924-96-4) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C5H5N3O2 and a molecular weight of 139.11200 g/mol. Key properties include a melting point of 292-295 °C, a boiling point of 659ºC at 760mmHg, a density of 1.63g/cm3 and a flash point of 352.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 13924-96-4
Jingsj CID: J-1514445-3
Molecular Formula: C₅H₅N₃O₂
Molecular Weight: 139.11200 g/mol
Category: Organic Bases
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	292-295 °C
Boiling Point	659ºC at 760mmHg
Density	1.63g/cm3
Flash Point	352.4ºC
Exact Mass	139.03800
PSA	89.83000
Vapor Pressure	5.65E-18mmHg at 25°C
Refractive Index	1.696

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. 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 5-Hydroxypyrazine-2-carboxamide?

The CAS number of 5-Hydroxypyrazine-2-carboxamide is 13924-96-4.

What are the molecular formula and molecular weight of 5-Hydroxypyrazine-2-carboxamide?

5-Hydroxypyrazine-2-carboxamide has molecular formula C5H5N3O2 and molecular weight 139.11200 g/mol.

What are the upstream and downstream products of 5-Hydroxypyrazine-2-carboxamide?

For 5-Hydroxypyrazine-2-carboxamide, Downstream Products: Methyl 5-chloropyrazine-2-carboxylate, Methyl 5-hydroxypyrazine-2-carboxylate, 5,6-dioxo-1,4,5,6-tetrahydropyrazine-2-carboxylic acid.

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

Last updated: 8/21/2026

How to cite: Jingsj. "5-Hydroxypyrazine-2-carboxamide (CAS 13924-96-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1514445-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.