(1E,4E)-1,5-bis(4-methoxyphenyl)penta-1,4-dien-3-one

1,5-双(4-甲氧基苯基)-1,4-戊二烯-3-酮

Also known as: Dianisylidene acetone, Bis(4-methoxybenzylidene)acetone, 1,5-Bis(4-methoxyphenyl)-1,4-pentadien-3-one, (E,E)-1,5-Bis(4-methoxyphenyl)-1,4-pentadien-3-one, MFCD00014901

(1E,4E)-1,5-bis(4-methoxyphenyl)penta-1,4-dien-3-one (CAS 2051-07-2) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C19H18O3 and a molecular weight of 294.344 g/mol. It is also known as Dianisylidene acetone, Bis(4-methoxybenzylidene)acetone and 1,5-Bis(4-methoxyphenyl)-1,4-pentadien-3-one. Key properties include a melting point of 128-129ºC, a boiling point of 492.1±40.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 243.7±13.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2051-07-2
Jingsj CID: J-6559-5
Molecular Formula: C₁₉H₁₈O₃
Chinese Name: 1,5-双(4-甲氧基苯基)-1,4-戊二烯-3-酮
Molecular Weight: 294.344 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	128-129ºC
Boiling Point	492.1±40.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	243.7±13.8 °C

Frequently Asked Questions

What is the CAS number of (1E,4E)-1,5-bis(4-methoxyphenyl)penta-1,4-dien-3-one?

The CAS number of (1E,4E)-1,5-bis(4-methoxyphenyl)penta-1,4-dien-3-one is 2051-07-2.

What are the molecular formula and molecular weight of (1E,4E)-1,5-bis(4-methoxyphenyl)penta-1,4-dien-3-one?

(1E,4E)-1,5-bis(4-methoxyphenyl)penta-1,4-dien-3-one has molecular formula C19H18O3 and molecular weight 294.344 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. "(1E,4E)-1,5-bis(4-methoxyphenyl)penta-1,4-dien-3-one (CAS 2051-07-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6559-5 (accessed 2026-10-23).

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