4-methyl-2-phenyl-2-pentenal

4-甲基-2-苯基-2-戊烯醛

Also known as: Benzeneacetaldehyde, α-(2-methylpropylidene)-, 2-Phenyl-4-methyl-2-pentenal, 2-Phenyl-4-methylpent-2-enal, 4-Methyl-2-phenylpent-2-enal, 2-Pentenal, 4-methyl-2-phenyl-, FEMA 3200, MFCD00051834, EINECS 247-869-4

4-methyl-2-phenyl-2-pentenal (CAS 26643-91-4) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H14O and a molecular weight of 174.23900 g/mol. It is also known as Benzeneacetaldehyde, α-(2-methylpropylidene)-, 2-Phenyl-4-methyl-2-pentenal and 2-Phenyl-4-methylpent-2-enal. Key properties include a boiling point of 96 °C0.7 mm Hg(lit.), a density of 0.983 g/mL at 25 °C(lit.) and a flash point of >230 °F. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
26643-91-4
Jingsj CID
J-11144-1
Molecular Formula
C12H14O
Chinese Name
4-甲基-2-苯基-2-戊烯醛
Molecular Weight
174.23900 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point96 °C0.7 mm Hg(lit.)
Density0.983 g/mL at 25 °C(lit.)
Flash Point>230 °F

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 4-methyl-2-phenyl-2-pentenal?

The CAS number of 4-methyl-2-phenyl-2-pentenal is 26643-91-4.

What are the molecular formula and molecular weight of 4-methyl-2-phenyl-2-pentenal?

4-methyl-2-phenyl-2-pentenal has molecular formula C12H14O and molecular weight 174.23900 g/mol.

Is 4-methyl-2-phenyl-2-pentenal hazardous?

4-methyl-2-phenyl-2-pentenal 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. "4-methyl-2-phenyl-2-pentenal (CAS 26643-91-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11144-1 (accessed 2026-10-25).

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