5-Ethoxyfuran-2(5H)-one

Also known as: 2(5H)-Furanone, 5-ethoxy-, 5-ETHOXY-5H-FURAN-2-ONE, 5-ethoxy-2(5H)-furanone, 5-ethoxy-2,5-dihydrofuran-2-one, 5-ethoxy-5H-furan-2-one, 2-ethoxy-2H-furan-5-one, 4-Ethoxy-2-butenolide, 4-Ethoxy-4-hydroxycrotonic acid gamma-lactone, beta-Formylacrylic acid pseudoethyl ester, Ethoxyfuranone

5-Ethoxyfuran-2(5H)-one (CAS 2833-30-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H8O3 and a molecular weight of 128.12600 g/mol. Key properties include a boiling point of 262.8ºC at 760 mmHg, a density of 1.13g/cm3 and a flash point of 104.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2833-30-9
Jingsj CID: J-1505926-4
Molecular Formula: C₆H₈O₃
Molecular Weight: 128.12600 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	262.8ºC at 760 mmHg
Density	1.13g/cm3
Flash Point	104.3ºC
Exact Mass	128.04700
PSA	35.53000
LogP	0.46200
Vapor Pressure	0.0107mmHg at 25°C
Refractive Index	1.465

Customs & Trade Information

HS Code	2932209090
Summary	2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 5-Ethoxyfuran-2(5H)-one?

The CAS number of 5-Ethoxyfuran-2(5H)-one is 2833-30-9.

What are the molecular formula and molecular weight of 5-Ethoxyfuran-2(5H)-one?

5-Ethoxyfuran-2(5H)-one has molecular formula C6H8O3 and molecular weight 128.12600 g/mol.

What are the upstream and downstream products of 5-Ethoxyfuran-2(5H)-one?

For 5-Ethoxyfuran-2(5H)-one, Upstream Products: Furfural, Ethanol, Furan; Downstream Products: 2,5-Diphenylfuran, Ethyl 2-furoate, 4-Bromo-5-ethoxy-2(5H)-furanone.

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. "5-Ethoxyfuran-2(5H)-one (CAS 2833-30-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1505926-4 (accessed 2026-11-09).

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