3-Ethyl-5-methylisoxazole-4-carboxylic acid

3-乙基-5-甲基异噁唑-4-羧酸

Also known as: 3-ETHYL-5-METHYL-4-ISOXAZOLECARBOXYLIC ACID, 3-ETHYL-5-METHYLISOXAZOLE-4-CARBOXYLIC ACID, 3-ethyl-5-methyl-1,2-oxazole-4-carboxylic acid, 5-METHYL-3-ETHYLISOXAZOLE-4-CARBOXYLIC ACID, AKOS B013953, AKOS PAO-1631, ART-CHEM-BB B013953, BUTTPARK 154\06-46, CHEMBRDG-BB 4004641, MFCD03422293

3-Ethyl-5-methylisoxazole-4-carboxylic acid (CAS 17147-85-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H9NO3 and a molecular weight of 155.15100 g/mol. It is also known as 3-ETHYL-5-METHYL-4-ISOXAZOLECARBOXYLIC ACID, 3-ETHYL-5-METHYLISOXAZOLE-4-CARBOXYLIC ACID and 3-ethyl-5-methyl-1,2-oxazole-4-carboxylic acid. Key properties include a melting point of 121-125ºC, a boiling point of 293.9ºC at 760mmHg and a flash point of 131.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
17147-85-2
Jingsj CID
J-10372-3
Molecular Formula
C7H9NO3
Chinese Name
3-乙基-5-甲基异噁唑-4-羧酸
Molecular Weight
155.15100 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point121-125ºC
Boiling Point293.9ºC at 760mmHg
Flash Point131.5ºC

Frequently Asked Questions

What is the CAS number of 3-Ethyl-5-methylisoxazole-4-carboxylic acid?

The CAS number of 3-Ethyl-5-methylisoxazole-4-carboxylic acid is 17147-85-2.

What are the molecular formula and molecular weight of 3-Ethyl-5-methylisoxazole-4-carboxylic acid?

3-Ethyl-5-methylisoxazole-4-carboxylic acid has molecular formula C7H9NO3 and molecular weight 155.15100 g/mol.

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

Last updated:

How to cite: Jingsj. "3-Ethyl-5-methylisoxazole-4-carboxylic acid (CAS 17147-85-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-10372-3 (accessed 2026-10-23).

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