8-methoxy-2-oxo-2H-chromene-3-carboxylic acid

Also known as: 2H-1-Benzopyran-3-carboxylic acid, 8-methoxy-2-oxo-, 8-methoxy-2-oxochromene-3-carboxylic acid, 8-methoxy coumarin-3-carboxylic acid, AKOS BBS-00003094, RARECHEM AB KA K012, TIMTEC-BB SBB009306, ART-CHEM-BB B013789

8-methoxy-2-oxo-2H-chromene-3-carboxylic acid (CAS 2555-20-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H8O5 and a molecular weight of 220.17800 g/mol. Key properties include a melting point of 214ºC, a boiling point of 439ºC at 760 mmHg, a density of 1.454 g/cm3 and a flash point of 178.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2555-20-6
Jingsj CID: J-1340743-7
Molecular Formula: C₁₁H₈O₅
Molecular Weight: 220.17800 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	214ºC
Boiling Point	439ºC at 760 mmHg
Density	1.454 g/cm3
Flash Point	178.8ºC
Exact Mass	220.03700
PSA	76.74000
LogP	1.49980
Vapor Pressure	1.76E-08mmHg at 25°C

Customs & Trade Information

HS Code	2932209090
Summary	2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 8-methoxy-2-oxo-2H-chromene-3-carboxylic acid?

The CAS number of 8-methoxy-2-oxo-2H-chromene-3-carboxylic acid is 2555-20-6.

What are the molecular formula and molecular weight of 8-methoxy-2-oxo-2H-chromene-3-carboxylic acid?

8-methoxy-2-oxo-2H-chromene-3-carboxylic acid has molecular formula C11H8O5 and molecular weight 220.17800 g/mol.

What are the upstream and downstream products of 8-methoxy-2-oxo-2H-chromene-3-carboxylic acid?

For 8-methoxy-2-oxo-2H-chromene-3-carboxylic acid, Upstream Products: Meldrum's acid, o-Vanillin, Malonic acid; Downstream Products: 8-methoxy-2-oxochromene-3-carboxamide, 8-Methoxycoumarin.

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

Last updated: 8/21/2026

How to cite: Jingsj. "8-methoxy-2-oxo-2H-chromene-3-carboxylic acid (CAS 2555-20-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1340743-7 (accessed 2026-11-09).

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