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Methyl arachidonate

Also known as: Methyl (5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoate, 5,8,11,14-Eicosatetraenoic acid, methyl ester, (5Z,8Z,11Z,14Z)-, 5,8,11,14-Eicosatetraenoic acid, methyl ester, (all-Z)-, Arachidonic acid methyl ester, Methyl (5Z,8Z,11Z,14Z)-5,8,11,14-icosatetraenoate, Methyl cis-5,8,11,14-eicosatetraenoate, EINECS 219-900-1, MFCD00016775

Methyl arachidonate (CAS 2566-89-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C21H34O2 and a molecular weight of 318.493 g/mol. Key properties include a boiling point of 403.9±34.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 102.0±24.0 °C. It is classified under GHS with signal word Danger and hazard statements H304, H315 — Causes skin irritation and H336 — May cause drowsiness or dizziness. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2566-89-4
Jingsj CID
J-8204-2
Molecular Formula
C21H34O2
Molecular Weight
318.493 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point403.9±34.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point102.0±24.0 °C
Exact Mass318.255890
PSA26.30000
LogP7.47
AppearanceLiquid
Vapor Pressure0.0±0.9 mmHg at 25°C
Refractive Index1.486
Additional Propertychloroform: 50 mg/mL, clear, colorless

GHS Safety & Compliance

Irritant / Health Hazard / Environmental HazardSignal word: Danger
  • H304
  • H315 — Causes skin irritation
  • H336 — May cause drowsiness or dizziness
  • H410 — Very toxic to aquatic life with long lasting effects

Activity & Biological Data

Additional Information[1]. White, Mary F, et al. The application of the polybromide yield in the estimation of methyl arachidonate in the methyl ester mixtures. Journal of the American Oil Chemists' Society. Volume: 26. Pages: 85-90. Journal.1949.

Customs & Trade Information

HS Code2916190090
Summary2916190090 unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tariff:6.5%。general tariff:30.0%

Frequently Asked Questions

What is the CAS number of Methyl arachidonate?

The CAS number of Methyl arachidonate is 2566-89-4.

What are the molecular formula and molecular weight of Methyl arachidonate?

Methyl arachidonate has molecular formula C21H34O2 and molecular weight 318.493 g/mol.

Is Methyl arachidonate hazardous?

Methyl arachidonate has GHS signal word Danger and hazard statements H304; H315 — Causes skin irritation; H336 — May cause drowsiness or dizziness.

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

Last updated:

How to cite: Jingsj. "Methyl arachidonate (CAS 2566-89-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8204-2 (accessed 2026-11-09).

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