3-Methyl-1-oxo-1H-isochromene-4-carboxylic acid

3-甲基-1-氧代-1H-异苯并吡喃-4-甲酸

Also known as: 1H-2-Benzopyran-4-carboxylic acid, 3-methyl-1-oxo-, 3-Methyl-1-oxoisochromene-4-carboxylic acid, 3-Methylisocoumarin-4-carboxylic acid, 4-Carboxy-3-methylisocoumarin, 4-Carboxy-3-methyl-isocoumarin, 3-Methyl-isocoumarin-4-carbonsäure, F2176-0068

3-Methyl-1-oxo-1H-isochromene-4-carboxylic acid (CAS 16984-81-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H8O4 and a molecular weight of 204.17900 g/mol. It is also known as 1H-2-Benzopyran-4-carboxylic acid, 3-methyl-1-oxo-, 3-Methyl-1-oxoisochromene-4-carboxylic acid and 3-Methylisocoumarin-4-carboxylic acid. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 16984-81-9
Jingsj CID: J-991128-0
Molecular Formula: C₁₁H₈O₄
Chinese Name: 3-甲基-1-氧代-1H-异苯并吡喃-4-甲酸
Molecular Weight: 204.17900 g/mol
Category: Organic Acids
Last updated: 8/21/2026

No offers for this compound yet.

Request a quote

Frequently Asked Questions

What is the CAS number of 3-Methyl-1-oxo-1H-isochromene-4-carboxylic acid?

The CAS number of 3-Methyl-1-oxo-1H-isochromene-4-carboxylic acid is 16984-81-9.

What are the molecular formula and molecular weight of 3-Methyl-1-oxo-1H-isochromene-4-carboxylic acid?

3-Methyl-1-oxo-1H-isochromene-4-carboxylic acid has molecular formula C11H8O4 and molecular weight 204.17900 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "3-Methyl-1-oxo-1H-isochromene-4-carboxylic acid (CAS 16984-81-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-991128-0 (accessed 2026-10-24).

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