trans-3,5-Dimethoxystilbene
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. 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-1976787-4
- Molecular Formula
- C16H16O2
- Molecular Weight
- 240.29700 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 376.5ºC at 760mmHg |
|---|---|
| Density | 1.089g/cm3 |
| Flash Point | 150.7ºC |
| Exact Mass | 240.11500 |
| PSA | 18.46000 |
| LogP | 3.87420 |
| Vapor Pressure | 1.56E-05mmHg at 25°C |
| Refractive Index | 1.615 |
| Storage Conditions | 2-8°C |
Activity & Biological Data
| Additional Information | [1]. Extractives of jack pine bark: Occurrence of cis- and trans-pinosylvin dimethyl ether and ferulic acid esters. J.W.Rowe, et al. Phytochemistry. 1969 Jan, 8 (1): 235-241. |
|---|
Customs & Trade Information
| HS Code | 2909309090 |
|---|---|
| Summary | 2909309090 other aromatic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
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.
What are the upstream and downstream products of trans-3,5-Dimethoxystilbene?
For trans-3,5-Dimethoxystilbene, Downstream Products: Pinosylvin monomethyl ether, Pinosylvin, 3,5-Dimethoxybenzaldehyde.
Data compiled from public chemical databases such as PubChem 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-1976787-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.