5-Hydroxypyrazine-2-carboxylic acid

Also known as: 5-Hydroxy-2-pyrazinecarboxylic acid, 5-Hydroxypyrazine-3-carboxylic acid, 5-Hydroxypyrazinoic acid, 5-Oxo-4,5-dihydro-2-pyrazinecarboxylic acid, Pyrazinecarboxylic acid, 4,5-dihydro-5-oxo-, 5-Hydroxypyrazinecarboxylic Acid

5-Hydroxypyrazine-2-carboxylic acid (CAS 34604-60-9) 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 >295°C (dec.), a boiling point of 608.5ºC at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 321.8ºC. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.: 34604-60-9
Jingsj CID: J-1956074-8
Molecular Formula: C₅H₄N₂O₃
Molecular Weight: 140.097 g/mol
Category: Organic Acids
Last updated: 11/3/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point	>295°C (dec.)
Boiling Point	608.5ºC at 760 mmHg
Density	1.6±0.1 g/cm3
Flash Point	321.8ºC
Exact Mass	140.022186
PSA	83.31000
LogP	-1.71
Refractive Index	1.662

Activity & Biological Data

Additional Information	[1]. Huq, Fazlul; Hossain, Zahed. Molecular modelling analysis of the metabolism of pyrazinamide. Journal of Pharmacology and Toxicology (2006), 1(6), 505-515. [2]. Mehmedagic, Aida; Verite, Philippe; Menager, Sabine et al. Investigation of the effects of concomitant caffeine administration on the metabolic disposition of pyrazinamide in rats. Biopharmaceutics & Drug Disposition (2002), 23(5), 191-195.

Additional Information

[1]. Huq, Fazlul; Hossain, Zahed. Molecular modelling analysis of the metabolism of pyrazinamide. Journal of Pharmacology and Toxicology (2006), 1(6), 505-515. [2]. Mehmedagic, Aida; Verite, Philippe; Menager, Sabine et al. Investigation of the effects of concomitant caffeine administration on the metabolic disposition of pyrazinamide in rats. Biopharmaceutics & Drug Disposition (2002), 23(5), 191-195.

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 5-Hydroxypyrazine-2-carboxylic acid?

The CAS number of 5-Hydroxypyrazine-2-carboxylic acid is 34604-60-9.

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

5-Hydroxypyrazine-2-carboxylic acid has molecular formula C5H4N2O3 and molecular weight 140.097 g/mol.

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

For 5-Hydroxypyrazine-2-carboxylic acid, Upstream Products: Glyoxylic acid, Diaminomaleonitrile, 5-Chloropyrazine-2-carboxylic acid; Downstream Products: Methyl 5-chloropyrazine-2-carboxylate, 5-Chloropyrazine-2-carboxylic acid, Methyl 5-hydroxypyrazine-2-carboxylate.

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

Last updated: 11/3/2026

How to cite: Jingsj. "5-Hydroxypyrazine-2-carboxylic acid (CAS 34604-60-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1956074-8 (accessed 2026-11-09).

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