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3-hydroxy-4-oxopyran-2,6-dicarboxylic acid

Also known as: Meconic acid, Poppy acid, 3-Hydroxy-4-oxo-4H-pyran-2,6-dicarboxylic acid, 3-Hydroxy-4-oxo-1,4-pyran-2,6-dicarboxylic acid, 4H-Pyran-2,6-dicarboxylic acid, 3-hydroxy-4-oxo-, NSC 805, Aids009870

3-hydroxy-4-oxopyran-2,6-dicarboxylic acid (CAS 497-59-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H4O7 and a molecular weight of 200.10200 g/mol. Key properties include a boiling point of 353.8ºC at 760mmHg, a density of 2.043g/cm3 and a flash point of 149.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
497-59-6
Jingsj CID
J-1344390-8
Molecular Formula
C7H4O7
Molecular Weight
200.10200 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point353.8ºC at 760mmHg
Density2.043g/cm3
Flash Point149.8ºC
Exact Mass199.99600
PSA125.04000
Vapor Pressure0mmHg at 25°C
Refractive Index1.717

Frequently Asked Questions

What is the CAS number of 3-hydroxy-4-oxopyran-2,6-dicarboxylic acid?

The CAS number of 3-hydroxy-4-oxopyran-2,6-dicarboxylic acid is 497-59-6.

What are the molecular formula and molecular weight of 3-hydroxy-4-oxopyran-2,6-dicarboxylic acid?

3-hydroxy-4-oxopyran-2,6-dicarboxylic acid has molecular formula C7H4O7 and molecular weight 200.10200 g/mol.

What are the upstream and downstream products of 3-hydroxy-4-oxopyran-2,6-dicarboxylic acid?

For 3-hydroxy-4-oxopyran-2,6-dicarboxylic acid, Upstream Products: kojic acid, 3-Hydroxy-2,6-bis(hydroxymethyl)-4-pyrone.

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

Last updated:

How to cite: Jingsj. "3-hydroxy-4-oxopyran-2,6-dicarboxylic acid (CAS 497-59-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1344390-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.