4-Methylcinnamic acid
Also known as: (2E)-3-(4-methylphenyl)prop-2-enoic acid, 3-(4-methylphenyl)-2-propenoic acid, 3-(p-Tolyl)acrylic acid, p-Methylcinnamic acid, trans-4-methylcinnamic acid, Cinnamic acid, p-methyl-, AKOS BBB/231, AKOS BBS-00007857, BASF Luwipal 044, RARECHEM BK HC T309, MFCD00002697, EINECS 217-479-9
4-Methylcinnamic acid (CAS 1866-39-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H10O2 and a molecular weight of 162.185 g/mol. Key properties include a melting point of 196-198 °C(lit.), a boiling point of 300.6±11.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 206.1±10.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1866-39-3
- Jingsj CID
- J-27743-0
- Molecular Formula
- C10H10O2
- Molecular Weight
- 162.185 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 196-198 °C(lit.) |
|---|---|
| Boiling Point | 300.6±11.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 206.1±10.2 °C |
| Exact Mass | 162.068085 |
| PSA | 37.30000 |
| LogP | 2.87 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.603 |
Activity & Biological Data
| Additional Information | [1]. Kim JH, et, al. Cinnamic Acid Analogs as Intervention Catalysts for Overcoming Antifungal Tolerance. Molecules. 2017 Oct 21;22(10):1783. |
|---|
Customs & Trade Information
| HS Code | 2916399090 |
|---|---|
| Summary | 2916399090 other aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-Methylcinnamic acid?
The CAS number of 4-Methylcinnamic acid is 1866-39-3.
What are the molecular formula and molecular weight of 4-Methylcinnamic acid?
4-Methylcinnamic acid has molecular formula C10H10O2 and molecular weight 162.185 g/mol.
What are the upstream and downstream products of 4-Methylcinnamic acid?
For 4-Methylcinnamic acid, Upstream Products: 4-Bromotoluene, Acrylic acid, 4-Iodotoluene; Downstream Products: 1-Methyl-4-((E)-styryl)-benzene, (R)-3-Amino-3-(4-methylphenyl)propanoic acid, 4-Methyl-L-phenylalanine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Methylcinnamic acid (CAS 1866-39-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27743-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.