3,4,5-Trimethoxycinnamic acid ethyl ester

Also known as: Ethyl 3,4,5-trimethoxycinnamate, Ethyl 3-(3,4,5-trimethoxyphenyl)acrylate, Ethyl (2E)-3-(3,4,5-trimethoxyphenyl)acrylate, 3,4,5-Trimethoxybenzeneacrylic acid ethyl ester, 3-(3,4,5-Trimethoxyphenyl)-2-propenoic acid ethyl ester, 3-(3,4,5-Trimethoxyphenyl)acrylic acid ethyl ester, 3-(3,4,5-Trimethoxyphenyl)propenoic acid ethyl ester, trans-Ethyl 3,4,5-trimethoxycinnamate, 2-Propenoic acid, 3-(3,4,5-trimethoxyphenyl)-, ethyl ester, (2E)-, 3,4,5-TRIMETHOXYCINMIC ACID ETHYL ESTER

3,4,5-Trimethoxycinnamic acid ethyl ester (CAS 1878-29-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C14H18O5 and a molecular weight of 266.290 g/mol. Key properties include a melting point of 60-62ºC, a boiling point of 384.0±37.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 168.9±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1878-29-1
Jingsj CID: J-1083695-0
Molecular Formula: C₁₄H₁₈O₅
Molecular Weight: 266.290 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	60-62ºC
Boiling Point	384.0±37.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	168.9±26.5 °C
Exact Mass	266.115417
PSA	53.99000
LogP	2.30
Vapor Pressure	0.0±0.9 mmHg at 25°C
Refractive Index	1.525

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 3,4,5-Trimethoxycinnamic acid ethyl ester?

The CAS number of 3,4,5-Trimethoxycinnamic acid ethyl ester is 1878-29-1.

What are the molecular formula and molecular weight of 3,4,5-Trimethoxycinnamic acid ethyl ester?

3,4,5-Trimethoxycinnamic acid ethyl ester has molecular formula C14H18O5 and molecular weight 266.290 g/mol.

What are the upstream and downstream products of 3,4,5-Trimethoxycinnamic acid ethyl ester?

For 3,4,5-Trimethoxycinnamic acid ethyl ester, Upstream Products: 3,4,5-Trimethoxybenzaldehyde, Ethyl (triphenylphosphoranylidene)acetate, Triethyl phosphonoacetate; Downstream Products: Piperlongumine, Ethyl 3-(3,4,5-trimethoxyphenyl)propionate, 3,4,5-Trimethoxy-trans-cinnamic acid.

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. "3,4,5-Trimethoxycinnamic acid ethyl ester (CAS 1878-29-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1083695-0 (accessed 2026-11-09).

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