4-methyl-1,2,5-oxadiazole-3-carboxylic acid

Also known as: 3-methylfurazan-4-carboxylic acid, 4-Methyl-3-furazancarboxylic acid, 4-Methyl-furazan-3-carboxylic acid, Methyl-furazancarbonsaeure, methyl-furazancarboxylic acid

4-methyl-1,2,5-oxadiazole-3-carboxylic acid (CAS 58677-34-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H4N2O3 and a molecular weight of 128.08600 g/mol. Key properties include a boiling point of 286.5ºC at 760 mmHg, a density of 1.464g/cm3 and a flash point of 127.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 58677-34-2
Jingsj CID: J-1083554-8
Molecular Formula: C₄H₄N₂O₃
Molecular Weight: 128.08600 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	286.5ºC at 760 mmHg
Density	1.464g/cm3
Flash Point	127.1ºC
Exact Mass	128.02200
PSA	76.22000
LogP	0.07620
Refractive Index	1.517

Frequently Asked Questions

What is the CAS number of 4-methyl-1,2,5-oxadiazole-3-carboxylic acid?

The CAS number of 4-methyl-1,2,5-oxadiazole-3-carboxylic acid is 58677-34-2.

What are the molecular formula and molecular weight of 4-methyl-1,2,5-oxadiazole-3-carboxylic acid?

4-methyl-1,2,5-oxadiazole-3-carboxylic acid has molecular formula C4H4N2O3 and molecular weight 128.08600 g/mol.

What are the upstream and downstream products of 4-methyl-1,2,5-oxadiazole-3-carboxylic acid?

For 4-methyl-1,2,5-oxadiazole-3-carboxylic acid, Upstream Products: 3,4-Dimethyl-1,2,5-oxadiazole, 1-(4-methyl-1,2,5-oxadiazol-3-yl)ethanone.

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. "4-methyl-1,2,5-oxadiazole-3-carboxylic acid (CAS 58677-34-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1083554-8 (accessed 2026-11-09).

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