3-allyl-4-hydroxy-5-methoxybenzaldehyde

Also known as: 4-hydroxy-3-methoxy-5-(prop-2-en-1-yl)benzaldehyde, 3-methoxy-4-hydroxy-5-allylbenzaldehyde, 5-allyl-4-hydroxy-3-methoxybenzaldehyde, 5-allylvanillin, AKOS B029066, AKOS BC-3067, AKOS BBS-00008392, AKOS LT-302X10, ART-CHEM-BB B029066, CHEMBRDG-BB 4012328, F1274-0234, IFLAB-BB F1274-0234

3-allyl-4-hydroxy-5-methoxybenzaldehyde (CAS 20240-58-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C11H12O3 and a molecular weight of 192.21100 g/mol. Key properties include a boiling point of 320.2ºC at 760 mmHg, a density of 1.144g/cm3 and a flash point of 123.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 20240-58-8
Jingsj CID: J-1032660-0
Molecular Formula: C₁₁H₁₂O₃
Molecular Weight: 192.21100 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	320.2ºC at 760 mmHg
Density	1.144g/cm3
Flash Point	123.7ºC
Exact Mass	192.07900
PSA	46.53000
LogP	1.94180
Vapor Pressure	0.000172mmHg at 25°C
Refractive Index	1.574

Customs & Trade Information

HS Code	2912499000
Summary	2912499000. other aldehyde-ethers, aldehyde-phenols and aldehydes with other oxygen function. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:5.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 3-allyl-4-hydroxy-5-methoxybenzaldehyde?

The CAS number of 3-allyl-4-hydroxy-5-methoxybenzaldehyde is 20240-58-8.

What are the molecular formula and molecular weight of 3-allyl-4-hydroxy-5-methoxybenzaldehyde?

3-allyl-4-hydroxy-5-methoxybenzaldehyde has molecular formula C11H12O3 and molecular weight 192.21100 g/mol.

What are the upstream and downstream products of 3-allyl-4-hydroxy-5-methoxybenzaldehyde?

For 3-allyl-4-hydroxy-5-methoxybenzaldehyde, Upstream Products: 4-(Allyloxy)-3-methoxybenzaldehyde, Vanillin, 2-(Allyloxy)-3-methoxybenzaldehyde; Downstream Products: 5-Carboxyvanillic acid, 3-allyl-4,5-dimethoxybenzaldehyde.

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

Last updated: 8/21/2026

How to cite: Jingsj. "3-allyl-4-hydroxy-5-methoxybenzaldehyde (CAS 20240-58-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1032660-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.