ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate

Also known as: 2-Cyclohexene-1-carboxylic acid, 6-ethyl-2-methyl-4-oxo-, ethyl ester, ethyl 6-ethyl-2-methyl-4-oxo-cyclohex-2-ene-1-carboxylate, 6-Ethyl-2-methyl-4-oxo-2-cyclohexene-1-carboxylic acid ethyl ester, NSC 5688, NSC 57312

ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate (CAS 5421-90-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H18O3 and a molecular weight of 210.27000 g/mol. Key properties include a boiling point of 297.8ºC at 760mmHg, a density of 1.021g/cm3 and a flash point of 127.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5421-90-9
Jingsj CID: J-1506107-1
Molecular Formula: C₁₂H₁₈O₃
Molecular Weight: 210.27000 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	297.8ºC at 760mmHg
Density	1.021g/cm3
Flash Point	127.2ºC
Exact Mass	210.12600
PSA	43.37000
LogP	2.11100
Refractive Index	1.465

Customs & Trade Information

HS Code	2918300090
Summary	2918300090 other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。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 ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate?

The CAS number of ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate is 5421-90-9.

What are the molecular formula and molecular weight of ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate?

ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate has molecular formula C12H18O3 and molecular weight 210.27000 g/mol.

What are the upstream and downstream products of ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate?

For ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate, Upstream Products: Ethyl acetoacetate, Propionaldehyde; Downstream Products: 5-Ethyl-3-methylcyclohex-2-enone.

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. "ethyl 6-ethyl-2-methyl-4-oxocyclohex-2-ene-1-carboxylate (CAS 5421-90-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1506107-1 (accessed 2026-11-09).

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