3-Methylcyclopentane-1,2,4-trione

3-甲基环戊烷-1,2,4-三酮

Also known as: 1,2,4-Cyclopentanetrione, 3-methyl-, 1,4-Cyclopentanetrione, 3-methyl, 1-Methylcyclopentane-2,3,5-trione, 2-Methyl-1,3,4-trioxocyclopentane, 2-Methyl-cyclopentantrion-(1.3.4), 2-Methyl-cyclopentantrion-(1.3.5), 3-Methyl-1,2,4-cyclopentanetrione, 3-Methyl-1,4-cyclopentanetrione, 3-Methyl-1.2.4-trioxo-cyclopentan, 3-Methyl-cyclopentan-1,2,4-trion, 3-Methyl-cyclopentantrion-(1.2.4), 3-methyl-cyclopentane-1,2,4-trione, 3-methylcyclopentane-1,2,4-trione, 5-Methylcyclopentane-1,2,4-trione

3-Methylcyclopentane-1,2,4-trione (CAS 4505-54-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C6H6O3 and a molecular weight of 126.11000 g/mol. It is also known as 1,2,4-Cyclopentanetrione, 3-methyl-, 1,4-Cyclopentanetrione, 3-methyl and 1-Methylcyclopentane-2,3,5-trione. Key properties include a boiling point of 256.9ºC at 760 mmHg, a density of 1.284g/cm3 and a flash point of 105.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4505-54-8
Jingsj CID
J-1593567-6
Molecular Formula
C6H6O3
Chinese Name
3-甲基环戊烷-1,2,4-三酮
Molecular Weight
126.11000 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point256.9ºC at 760 mmHg
Density1.284g/cm3
Flash Point105.5ºC

Frequently Asked Questions

What is the CAS number of 3-Methylcyclopentane-1,2,4-trione?

The CAS number of 3-Methylcyclopentane-1,2,4-trione is 4505-54-8.

What are the molecular formula and molecular weight of 3-Methylcyclopentane-1,2,4-trione?

3-Methylcyclopentane-1,2,4-trione has molecular formula C6H6O3 and molecular weight 126.11000 g/mol.

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

Last updated:

How to cite: Jingsj. "3-Methylcyclopentane-1,2,4-trione (CAS 4505-54-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1593567-6 (accessed 2026-10-22).

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