trans-3,5-Dimethoxystilbene

3,5-二甲氧基二苯乙烯

Also known as: pinosylvin dimethyl ether, trans-pinosylvin dimethyl ether, 3,5-dimethoxystilbene, 3,5-dimethoxy-trans-stilbene, (E)-1,3-dimethoxy-5-styrylbenzene, 1,3-dimethoxy-5-(2-phenylethenyl)benzene, AKOS 236-83, NSC43313

trans-3,5-Dimethoxystilbene (CAS 21956-56-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C16H16O2 and a molecular weight of 240.29700 g/mol. It is also known as pinosylvin dimethyl ether, trans-pinosylvin dimethyl ether and 3,5-dimethoxystilbene. Key properties include a boiling point of 376.5ºC at 760mmHg, a density of 1.089g/cm3 and a flash point of 150.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
21956-56-9
Jingsj CID
J-1976787-5
Molecular Formula
C16H16O2
Chinese Name
3,5-二甲氧基二苯乙烯
Molecular Weight
240.29700 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point376.5ºC at 760mmHg
Density1.089g/cm3
Flash Point150.7ºC

Frequently Asked Questions

What is the CAS number of trans-3,5-Dimethoxystilbene?

The CAS number of trans-3,5-Dimethoxystilbene is 21956-56-9.

What are the molecular formula and molecular weight of trans-3,5-Dimethoxystilbene?

trans-3,5-Dimethoxystilbene has molecular formula C16H16O2 and molecular weight 240.29700 g/mol.

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

Last updated:

How to cite: Jingsj. "trans-3,5-Dimethoxystilbene (CAS 21956-56-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1976787-5 (accessed 2026-10-22).

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