3-chloro-1,2-oxazole-5-carboxylic acid

3-氯异噁唑-5-羧酸

Also known as: 3-chloro-5-isoxazolecarboxylic acid, 3-chloroisoxazole-5-carboxylic acid, 3-chloro-1,2-oxazole-5-carboxylic acid, 3-chloroisoxazol-5-carboxylic acid, 5-isoxazolecarboxylic acid, 3-chloro-

3-chloro-1,2-oxazole-5-carboxylic acid (CAS 20724-56-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H2ClNO3 and a molecular weight of 147.51700 g/mol. It is also known as 3-chloro-5-isoxazolecarboxylic acid, 3-chloroisoxazole-5-carboxylic acid and 3-chloroisoxazol-5-carboxylic acid. Key properties include a boiling point of 342.6ºC at 760 mmHg, a density of 1.64g/cm3 and a flash point of 161ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
20724-56-5
Jingsj CID
J-1412254-9
Molecular Formula
C4H2ClNO3
Chinese Name
3-氯异噁唑-5-羧酸
Molecular Weight
147.51700 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point342.6ºC at 760 mmHg
Density1.64g/cm3
Flash Point161ºC

Frequently Asked Questions

What is the CAS number of 3-chloro-1,2-oxazole-5-carboxylic acid?

The CAS number of 3-chloro-1,2-oxazole-5-carboxylic acid is 20724-56-5.

What are the molecular formula and molecular weight of 3-chloro-1,2-oxazole-5-carboxylic acid?

3-chloro-1,2-oxazole-5-carboxylic acid has molecular formula C4H2ClNO3 and molecular weight 147.51700 g/mol.

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

Last updated:

How to cite: Jingsj. "3-chloro-1,2-oxazole-5-carboxylic acid (CAS 20724-56-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1412254-9 (accessed 2026-10-25).

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