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4-Methyl-2(5H)-furanone

Also known as: 2(5H)-Furanone, 4-methyl-, 4-Methylfuran-2(5H)-one, 4-Methyl-5H-furan-2-one, 3-Methyl-2H-furan-5-one, 4-Hydroxy-3-methyl-2-butenoic acid γ-lactone, 3-Methylbut-2-en-4-olide, 4-Methyl-2,5-dihydrofuran-2-one

4-Methyl-2(5H)-furanone (CAS 6124-79-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H6O2 and a molecular weight of 98.09990 g/mol. Key properties include a boiling point of 222.4ºC at 760 mmHg, a density of 1.12 g/cm3 and a flash point of 95 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
6124-79-4
Jingsj CID
J-24978-5
Molecular Formula
C5H6O2
Molecular Weight
98.09990 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point222.4ºC at 760 mmHg
Density1.12 g/cm3
Flash Point95 °C
Exact Mass98.03680
PSA26.30000
LogP0.48950
Refractive Index1.471

Customs & Trade Information

HS Code2932209090
Summary2932209090. 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 4-Methyl-2(5H)-furanone?

The CAS number of 4-Methyl-2(5H)-furanone is 6124-79-4.

What are the molecular formula and molecular weight of 4-Methyl-2(5H)-furanone?

4-Methyl-2(5H)-furanone has molecular formula C5H6O2 and molecular weight 98.09990 g/mol.

What are the upstream and downstream products of 4-Methyl-2(5H)-furanone?

For 4-Methyl-2(5H)-furanone, Upstream Products: Citraconic anhydride, Methyllithium, Carbon dioxide.

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-Methyl-2(5H)-furanone (CAS 6124-79-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-24978-5 (accessed 2026-11-09).

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