Ethyl 3-methylisoxazole-4-carboxylate

3-甲基异噁唑-4-甲酸乙酯

Also known as: 3-Methylisoxazole-4-carboxylic acid ethyl ester, 3-Methyl-4-isoxazolecarboxylic acid ethyl ester, Ethyl 3-methyl-1,2-oxazole-4-carboxylate, 4-Isoxazolecarboxylic acid, 3-methyl-, ethyl ester, Leflunomide Impurity 9, MFCD01075736

Ethyl 3-methylisoxazole-4-carboxylate (CAS 20328-15-8) 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 155.151 g/mol. It is also known as 3-Methylisoxazole-4-carboxylic acid ethyl ester, 3-Methyl-4-isoxazolecarboxylic acid ethyl ester and Ethyl 3-methyl-1,2-oxazole-4-carboxylate. Key properties include a boiling point of 226.4±20.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 90.7±21.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 20328-15-8
Jingsj CID: J-9570-1
Molecular Formula: C₇H₉NO₃
Chinese Name: 3-甲基异噁唑-4-甲酸乙酯
Molecular Weight: 155.151 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	226.4±20.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	90.7±21.8 °C

Frequently Asked Questions

What is the CAS number of Ethyl 3-methylisoxazole-4-carboxylate?

The CAS number of Ethyl 3-methylisoxazole-4-carboxylate is 20328-15-8.

What are the molecular formula and molecular weight of Ethyl 3-methylisoxazole-4-carboxylate?

Ethyl 3-methylisoxazole-4-carboxylate has molecular formula C7H9NO3 and molecular weight 155.151 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. "Ethyl 3-methylisoxazole-4-carboxylate (CAS 20328-15-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-9570-1 (accessed 2026-10-22).

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