3-Methyl-5-(5-methylisoxazol-3-yl)isoxazole-4-carboxylic acid

3-甲基-5-(5-甲基异噁唑-3-基)异噁唑-4-羧酸

Also known as: 3-methyl-5-(5-methyl-1,2-oxazol-3-yl)-1,2-oxazole-4-carboxylic acid

3-Methyl-5-(5-methylisoxazol-3-yl)isoxazole-4-carboxylic acid (CAS 849066-63-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H8N2O4 and a molecular weight of 208.17100 g/mol. It is also known as 3-methyl-5-(5-methyl-1,2-oxazol-3-yl)-1,2-oxazole-4-carboxylic acid. Key properties include a melting point of 167ºC, a boiling point of 394.6ºC at 760 mmHg, a density of 1.371g/cm3 and a flash point of 192.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 849066-63-3
Jingsj CID: J-1574462-9
Molecular Formula: C₉H₈N₂O₄
Chinese Name: 3-甲基-5-(5-甲基异噁唑-3-基)异噁唑-4-羧酸
Molecular Weight: 208.17100 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	167ºC
Boiling Point	394.6ºC at 760 mmHg
Density	1.371g/cm3
Flash Point	192.5ºC

Frequently Asked Questions

What is the CAS number of 3-Methyl-5-(5-methylisoxazol-3-yl)isoxazole-4-carboxylic acid?

The CAS number of 3-Methyl-5-(5-methylisoxazol-3-yl)isoxazole-4-carboxylic acid is 849066-63-3.

What are the molecular formula and molecular weight of 3-Methyl-5-(5-methylisoxazol-3-yl)isoxazole-4-carboxylic acid?

3-Methyl-5-(5-methylisoxazol-3-yl)isoxazole-4-carboxylic acid has molecular formula C9H8N2O4 and molecular weight 208.17100 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. "3-Methyl-5-(5-methylisoxazol-3-yl)isoxazole-4-carboxylic acid (CAS 849066-63-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1574462-9 (accessed 2026-10-23).

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