1-Benzofuran-5-carboxylic acid

1-苯并呋喃-5-甲酸

Also known as: Benzofuran-5-carboxylic acid, 5-Benzofurancarboxylic acid, Benzo[b]furan-5-carboxylic acid, 1-benzofunan-5-carboxylic acid, RARECHEM AL BE 1369, 3a,7a-dihydrobenzofuran-5-carboxylic acid, 5-Carboxybenzo[b]furan

1-Benzofuran-5-carboxylic acid (CAS 90721-27-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H6O3 and a molecular weight of 162.14200 g/mol. It is also known as Benzofuran-5-carboxylic acid, 5-Benzofurancarboxylic acid and Benzo[b]furan-5-carboxylic acid. Key properties include a melting point of 189-190ºC, a boiling point of 325.6ºC at 760mmHg, a density of 1.363g/cm3 and a flash point of 150.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
90721-27-0
Jingsj CID
J-1516862-9
Molecular Formula
C9H6O3
Chinese Name
1-苯并呋喃-5-甲酸
Molecular Weight
162.14200 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point189-190ºC
Boiling Point325.6ºC at 760mmHg
Density1.363g/cm3
Flash Point150.7ºC

Frequently Asked Questions

What is the CAS number of 1-Benzofuran-5-carboxylic acid?

The CAS number of 1-Benzofuran-5-carboxylic acid is 90721-27-0.

What are the molecular formula and molecular weight of 1-Benzofuran-5-carboxylic acid?

1-Benzofuran-5-carboxylic acid has molecular formula C9H6O3 and molecular weight 162.14200 g/mol.

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

Last updated:

How to cite: Jingsj. "1-Benzofuran-5-carboxylic acid (CAS 90721-27-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1516862-9 (accessed 2026-10-22).

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