5-Formylfuran-3-carboxylic acid

5-甲酰呋喃-3-羧酸

Also known as: 3-Furancarboxylic acid, 5-formyl- (9CI), 5-formyl-3-furoic acid, 5-formyl-3-furancarboxylic acid, 3-carboxyfuran-5-carboxaldehyde, 5-formylfuran-3-carboxylic acid, 3-furancarboxylic acid,5-formyl

5-Formylfuran-3-carboxylic acid (CAS 603999-19-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H4O4 and a molecular weight of 140.09400 g/mol. It is also known as 3-Furancarboxylic acid, 5-formyl- (9CI), 5-formyl-3-furoic acid and 5-formyl-3-furancarboxylic acid. Key properties include a boiling point of 354.235ºC at 760 mmHg, a density of 1.453g/cm3 and a flash point of 168.036ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
603999-19-5
Jingsj CID
J-1520859-0
Molecular Formula
C6H4O4
Chinese Name
5-甲酰呋喃-3-羧酸
Molecular Weight
140.09400 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point354.235ºC at 760 mmHg
Density1.453g/cm3
Flash Point168.036ºC

Frequently Asked Questions

What is the CAS number of 5-Formylfuran-3-carboxylic acid?

The CAS number of 5-Formylfuran-3-carboxylic acid is 603999-19-5.

What are the molecular formula and molecular weight of 5-Formylfuran-3-carboxylic acid?

5-Formylfuran-3-carboxylic acid has molecular formula C6H4O4 and molecular weight 140.09400 g/mol.

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

Last updated:

How to cite: Jingsj. "5-Formylfuran-3-carboxylic acid (CAS 603999-19-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1520859-0 (accessed 2026-10-22).

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