5-Ethyl-3-methylcyclohex-2-enone

3-甲基-5-乙基-2-环己烯-1-酮

Also known as: 3-Methyl-5-ethyl-2-cyclohexen-1-one, 2-Cyclohexen-1-one, 5-ethyl-3-methyl-, 3-Methyl-5-ethylcyclohex-2-en-1-one, 5-Ethyl-3-methylcyclohex-2-en-1-one, 5-Ethyl-3-methyl-2-cyclohexenone, 5-ethyl-3-methyl-cyclohex-2-enone

5-Ethyl-3-methylcyclohex-2-enone (CAS 40920-68-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H14O and a molecular weight of 138.20700 g/mol. It is also known as 3-Methyl-5-ethyl-2-cyclohexen-1-one, 2-Cyclohexen-1-one, 5-ethyl-3-methyl- and 3-Methyl-5-ethylcyclohex-2-en-1-one. Key properties include a boiling point of 212ºC, a density of 0.91 and a flash point of 84ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
40920-68-1
Jingsj CID
J-1107221-4
Molecular Formula
C9H14O
Chinese Name
3-甲基-5-乙基-2-环己烯-1-酮
Molecular Weight
138.20700 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point212ºC
Density0.91
Flash Point84ºC

Frequently Asked Questions

What is the CAS number of 5-Ethyl-3-methylcyclohex-2-enone?

The CAS number of 5-Ethyl-3-methylcyclohex-2-enone is 40920-68-1.

What are the molecular formula and molecular weight of 5-Ethyl-3-methylcyclohex-2-enone?

5-Ethyl-3-methylcyclohex-2-enone has molecular formula C9H14O and molecular weight 138.20700 g/mol.

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

Last updated:

How to cite: Jingsj. "5-Ethyl-3-methylcyclohex-2-enone (CAS 40920-68-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1107221-4 (accessed 2026-10-24).

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