5-(2-Methoxyphenyl)isoxazole-3-carboxylic acid

5-(2-甲氧基苯基)异噁唑-3-羧酸

Also known as: 5-(2-methoxyphenyl)-1,2-oxazole-3-carboxylic acid, 5-(2-methoxyphenyl)-3-isoxazolecarboxylic acid, 3-isoxazolecarboxylic acid, 5-(2-methoxyphenyl)-, TIMTEC-BB SBB011406, ASINEX-REAG BAS 11730012

5-(2-Methoxyphenyl)isoxazole-3-carboxylic acid (CAS 668971-16-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H9NO4 and a molecular weight of 219.19300 g/mol. It is also known as 5-(2-methoxyphenyl)-1,2-oxazole-3-carboxylic acid, 5-(2-methoxyphenyl)-3-isoxazolecarboxylic acid and 3-isoxazolecarboxylic acid, 5-(2-methoxyphenyl)-. Key properties include a boiling point of 414.7ºC at 760 mmHg, a density of 1.31g/cm3 and a flash point of 204.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
668971-16-2
Jingsj CID
J-1163207-0
Molecular Formula
C11H9NO4
Chinese Name
5-(2-甲氧基苯基)异噁唑-3-羧酸
Molecular Weight
219.19300 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point414.7ºC at 760 mmHg
Density1.31g/cm3
Flash Point204.6ºC

Frequently Asked Questions

What is the CAS number of 5-(2-Methoxyphenyl)isoxazole-3-carboxylic acid?

The CAS number of 5-(2-Methoxyphenyl)isoxazole-3-carboxylic acid is 668971-16-2.

What are the molecular formula and molecular weight of 5-(2-Methoxyphenyl)isoxazole-3-carboxylic acid?

5-(2-Methoxyphenyl)isoxazole-3-carboxylic acid has molecular formula C11H9NO4 and molecular weight 219.19300 g/mol.

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

Last updated:

How to cite: Jingsj. "5-(2-Methoxyphenyl)isoxazole-3-carboxylic acid (CAS 668971-16-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1163207-0 (accessed 2026-10-25).

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