ethyl 5-hydroxy-1,2-oxazole-4-carboxylate

5-羟基-4-异恶唑羧酸乙酯

Also known as: 4-Isoxazolecarboxylic acid, 5-hydroxy-, ethyl ester (9CI), 5-Hydroxy-4-isoxazolecarboxylic acid ethyl ester, 5-Hydroxyisoxazole-4-carboxylic acid ethyl ester, 5-oxo-2H-isoxazole-4-carboxylic acid ethyl ester, Ethyl 5-Hydroxy-4-isoxazolecarboxylate, Ethyl 5-Hydroxyisoxazole-4-carboxylate, Ethyl 5-oxo-4,5-dihydroisoxazole-4-carboxylate, ethyl 5-oxo-2,5-dihydro-1,2-oxazole-4-carboxylate, ethyl 5-oxo-2H-1,2-oxazole-4-carboxylate

ethyl 5-hydroxy-1,2-oxazole-4-carboxylate (CAS 500348-26-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H7NO4 and a molecular weight of 157.12400 g/mol. It is also known as 4-Isoxazolecarboxylic acid, 5-hydroxy-, ethyl ester (9CI), 5-Hydroxy-4-isoxazolecarboxylic acid ethyl ester and 5-Hydroxyisoxazole-4-carboxylic acid ethyl ester. Key properties include a boiling point of 252.1ºC at 760 mmHg, a density of 1.328g/cm3 and a flash point of 106.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
500348-26-5
Jingsj CID
J-1033898-2
Molecular Formula
C6H7NO4
Chinese Name
5-羟基-4-异恶唑羧酸乙酯
Molecular Weight
157.12400 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point252.1ºC at 760 mmHg
Density1.328g/cm3
Flash Point106.2ºC

Frequently Asked Questions

What is the CAS number of ethyl 5-hydroxy-1,2-oxazole-4-carboxylate?

The CAS number of ethyl 5-hydroxy-1,2-oxazole-4-carboxylate is 500348-26-5.

What are the molecular formula and molecular weight of ethyl 5-hydroxy-1,2-oxazole-4-carboxylate?

ethyl 5-hydroxy-1,2-oxazole-4-carboxylate has molecular formula C6H7NO4 and molecular weight 157.12400 g/mol.

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

Last updated:

How to cite: Jingsj. "ethyl 5-hydroxy-1,2-oxazole-4-carboxylate (CAS 500348-26-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1033898-2 (accessed 2026-10-24).

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