5-Methoxypyrazine-2-carboxylic acid

5-甲氧基吡嗪-2-羧酸

Also known as: 5-Methoxy-2-pyrazinecarboxylic acid, 5-Methoxy-pyrazinecarboxylic acid, Pyrazinecarboxylic acid, 5-methoxy-, 2-Carboxy-5-methoxypyrazine, 2-Carboxy-5-methoxy-1,4-diazine, 5-Methoxypyrazine-2-carboxylic

5-Methoxypyrazine-2-carboxylic acid (CAS 40155-42-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H6N2O3 and a molecular weight of 154.123 g/mol. It is also known as 5-Methoxy-2-pyrazinecarboxylic acid, 5-Methoxy-pyrazinecarboxylic acid and Pyrazinecarboxylic acid, 5-methoxy-. Key properties include a melting point of 197 °C(dec.), a boiling point of 296.8±35.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 133.3±25.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 40155-42-8
Jingsj CID: J-1418451-4
Molecular Formula: C₆H₆N₂O₃
Chinese Name: 5-甲氧基吡嗪-2-羧酸
Molecular Weight: 154.123 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	197 °C(dec.)
Boiling Point	296.8±35.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	133.3±25.9 °C

Frequently Asked Questions

What is the CAS number of 5-Methoxypyrazine-2-carboxylic acid?

The CAS number of 5-Methoxypyrazine-2-carboxylic acid is 40155-42-8.

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

5-Methoxypyrazine-2-carboxylic acid has molecular formula C6H6N2O3 and molecular weight 154.123 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "5-Methoxypyrazine-2-carboxylic acid (CAS 40155-42-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1418451-4 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.