trans-4-Methoxycinnamic acid
Also known as: (E)-3-(4-Methoxyphenyl)acrylic acid, (2E)-3-(4-Methoxyphenyl)-2-propenoic acid, 4-Methoxycinnamic acid, p-Methoxycinnamic acid, trans-p-Methoxycinnamic acid, 4-Methoxy-trans-cinnamic acid, p-Methoxy-trans-cinnamic acid, 3-(4-Methoxyphenyl)acrylic acid, PMCA
trans-4-Methoxycinnamic acid (CAS 943-89-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H10O3 and a molecular weight of 178.185 g/mol. Key properties include a melting point of 173.5ºC, a boiling point of 342.6±17.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 138.6±14.4 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 943-89-5
- Jingsj CID
- J-1956392-9
- Molecular Formula
- C10H10O3
- Molecular Weight
- 178.185 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 173.5ºC |
|---|---|
| Boiling Point | 342.6±17.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 138.6±14.4 °C |
| Exact Mass | 178.062988 |
| PSA | 46.53000 |
| LogP | 2.36 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.591 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Additional Information | [1]. Sirichan Tachai, et al. Uncommon secondary metabolites from Etlingera pavieana rhizomes. Nat Prod Res. 2016 Oct;30(19):2215-9. |
|---|
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 trans-4-Methoxycinnamic acid?
The CAS number of trans-4-Methoxycinnamic acid is 943-89-5.
What are the molecular formula and molecular weight of trans-4-Methoxycinnamic acid?
trans-4-Methoxycinnamic acid has molecular formula C10H10O3 and molecular weight 178.185 g/mol.
Is trans-4-Methoxycinnamic acid hazardous?
trans-4-Methoxycinnamic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of trans-4-Methoxycinnamic acid?
For trans-4-Methoxycinnamic acid, Upstream Products: 4-Bromoanisole, Acrylic acid, 4-Iodoanisole; Downstream Products: 7-Hydroxy-4-(4-methoxyphenyl)-3,4-dihydro-2H-1-benzopyran-2-one, Yangonin, 4-Methoxy-3-nitrobenzoic acid.
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-4-Methoxycinnamic acid (CAS 943-89-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1956392-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.