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5-Methyl-3(2H)-furanone

Also known as: 3(2H)-Furanone, 5-methyl-, 3(2H)-Furanone,5-methyl, 5-METHYL-3(2H)-FURANONE, 5-Methyl-2,3-dihydrofuran-3-one, 5-Methyl-3-oxo-2,3-dihydrofuran, 5-Methylfuran-3(2H)-one, 5-Methylfuran-3-one, 5-methyl-furan-3-one, 5-methylfuran-3-one, FEMA no. 4176, Flupyradifurone Impurity 2, UNII-D0380N8E30

5-Methyl-3(2H)-furanone (CAS 3511-32-8) 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 98.100 g/mol. Key properties include a boiling point of 162.9±20.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 61.7±15.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3511-32-8
Jingsj CID
J-1496806-0
Molecular Formula
C5H6O2
Molecular Weight
98.100 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point162.9±20.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point61.7±15.3 °C
Exact Mass98.036781
PSA26.30000
LogP-0.16
Vapor Pressure2.1±0.3 mmHg at 25°C
Refractive Index1.472
Storage Conditions2-8°C

Customs & Trade Information

HS Code2932190090
Summary2932190090 other compounds containing an unfused furan ring (whether or not hydrogenated) in the structure VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 5-Methyl-3(2H)-furanone?

The CAS number of 5-Methyl-3(2H)-furanone is 3511-32-8.

What are the molecular formula and molecular weight of 5-Methyl-3(2H)-furanone?

5-Methyl-3(2H)-furanone has molecular formula C5H6O2 and molecular weight 98.100 g/mol.

What are the upstream and downstream products of 5-Methyl-3(2H)-furanone?

For 5-Methyl-3(2H)-furanone, Upstream Products: 2,4-Pentanedione; Downstream Products: (3-Methylisoxazol-5-yl)methanol, (5-Methylisoxazol-3-yl)methanol.

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

Last updated:

How to cite: Jingsj. "5-Methyl-3(2H)-furanone (CAS 3511-32-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1496806-0 (accessed 2026-11-09).

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