Methyl 3,4,5-trimethoxycinnamate

Also known as: Methyl (E)-3,4,5-trimethoxycinnamate, Methyl trans-3,4,5-trimethoxycinnamate, Methyl trans-3-(3,4,5-trimethoxyphenyl)acrylate, 3,4,5-trimethoxycinnamic acid methyl ester, Methyl 3,4,5-trimethoxy-trans-cinnamate, methyl (2E)-3-(3,4,5-trimethoxyphenyl)prop-2-enoate

Methyl 3,4,5-trimethoxycinnamate (CAS 20329-96-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H16O5 and a molecular weight of 252.263 g/mol. Key properties include a melting point of 91-92ºC, a boiling point of 370.6±37.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 163.5±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 20329-96-8
Jingsj CID: J-1957795-8
Molecular Formula: C₁₃H₁₆O₅
Molecular Weight: 252.263 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	91-92ºC
Boiling Point	370.6±37.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	163.5±26.5 °C
Exact Mass	252.099777
PSA	53.99000
LogP	1.77
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.529

Activity & Biological Data

Additional Information	[1]. Olajide OA, et al. Methyl 3,4,5-trimethoxycinnamate suppresses inflammation in RAW264.7 macrophages and blocks macrophage-adipocyte interaction. Inflammopharmacology. 2020 Oct;28(5):1315-1326. [2]. Zhao Z, et al. Potential antiarrhythmic effect of methyl 3,4,5-trimethoxycinnamate, a bioactive substance from roots of polygalae radix: suppression of triggered activities in rabbit myocytes. Biol Pharm Bull. 2013;36(2):238-44.

Additional Information

[1]. Olajide OA, et al. Methyl 3,4,5-trimethoxycinnamate suppresses inflammation in RAW264.7 macrophages and blocks macrophage-adipocyte interaction. Inflammopharmacology. 2020 Oct;28(5):1315-1326. [2]. Zhao Z, et al. Potential antiarrhythmic effect of methyl 3,4,5-trimethoxycinnamate, a bioactive substance from roots of polygalae radix: suppression of triggered activities in rabbit myocytes. Biol Pharm Bull. 2013;36(2):238-44.

Customs & Trade Information

HS Code	2918990090
Summary	2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Methyl 3,4,5-trimethoxycinnamate?

The CAS number of Methyl 3,4,5-trimethoxycinnamate is 20329-96-8.

What are the molecular formula and molecular weight of Methyl 3,4,5-trimethoxycinnamate?

Methyl 3,4,5-trimethoxycinnamate has molecular formula C13H16O5 and molecular weight 252.263 g/mol.

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. "Methyl 3,4,5-trimethoxycinnamate (CAS 20329-96-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1957795-8 (accessed 2026-11-09).

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