3-Methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienal

3-甲基-5-(2,6,6-三甲基-1-环己烯-1-基)-2,4-戊二烯醛

Also known as: β-Ionylideneacetaldehyde, 2,4-Pentadienal, 3-methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-

3-Methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienal (CAS 1209-68-3) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C15H22O and a molecular weight of 218.33500 g/mol. It is also known as β-Ionylideneacetaldehyde and 2,4-Pentadienal, 3-methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-. Key properties include a boiling point of 329.1ºC at 760mmHg, a density of 0.948g/cm3 and a flash point of 156.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1209-68-3
Jingsj CID
J-931951-8
Molecular Formula
C15H22O
Chinese Name
3-甲基-5-(2,6,6-三甲基-1-环己烯-1-基)-2,4-戊二烯醛
Molecular Weight
218.33500 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point329.1ºC at 760mmHg
Density0.948g/cm3
Flash Point156.2ºC

Frequently Asked Questions

What is the CAS number of 3-Methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienal?

The CAS number of 3-Methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienal is 1209-68-3.

What are the molecular formula and molecular weight of 3-Methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienal?

3-Methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienal has molecular formula C15H22O and molecular weight 218.33500 g/mol.

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

Last updated:

How to cite: Jingsj. "3-Methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienal (CAS 1209-68-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-931951-8 (accessed 2026-10-22).

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