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7-Methoxy-2-oxo-2H-chromene-3-carboxylic acid

7-甲氧基香豆素-3-羧酸

Also known as: 7-Methoxycoumarin-3-carboxylic acid, 7-Methoxy-2-oxo-2H-1-benzopyran-3-carboxylic acid, 7-Methoxy-2-oxochromene-3-carboxylic acid, 7-Methoxycoumarin-3-carbonic acid

7-Methoxy-2-oxo-2H-chromene-3-carboxylic acid (CAS 20300-59-8) 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 220.178 g/mol. It is also known as 7-Methoxycoumarin-3-carboxylic acid, 7-Methoxy-2-oxo-2H-1-benzopyran-3-carboxylic acid and 7-Methoxy-2-oxochromene-3-carboxylic acid. Key properties include a melting point of 194ºC, a boiling point of 424.4±45.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 172.4±22.2 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
20300-59-8
Jingsj CID
J-1959182-5
Molecular Formula
C11H8O5
Chinese Name
7-甲氧基香豆素-3-羧酸
Molecular Weight
220.178 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point194ºC
Boiling Point424.4±45.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point172.4±22.2 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 7-Methoxy-2-oxo-2H-chromene-3-carboxylic acid?

The CAS number of 7-Methoxy-2-oxo-2H-chromene-3-carboxylic acid is 20300-59-8.

What are the molecular formula and molecular weight of 7-Methoxy-2-oxo-2H-chromene-3-carboxylic acid?

7-Methoxy-2-oxo-2H-chromene-3-carboxylic acid has molecular formula C11H8O5 and molecular weight 220.178 g/mol.

Is 7-Methoxy-2-oxo-2H-chromene-3-carboxylic acid hazardous?

7-Methoxy-2-oxo-2H-chromene-3-carboxylic acid has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "7-Methoxy-2-oxo-2H-chromene-3-carboxylic acid (CAS 20300-59-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1959182-5 (accessed 2026-10-26).

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