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3-Hydroxy-4,5-dimethyl-2(5H)-furanone

Also known as: Sotolon, Sotolone, Fenugreek lactone, Fenugreck Lactone, 4,5-Dimethyl-3-hydroxy-2(5H)-furanone, 4,5-Dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, Sugar lactone, Caramel furanone, 3-Hydroxy-4,5-dimethylfuran-2(5H)-one, 4,5-Dimethyl-isotetronic acid, FEMA 3634

3-Hydroxy-4,5-dimethyl-2(5H)-furanone (CAS 28664-35-9) 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 128.126 g/mol. Key properties include a melting point of 26-29 °C(lit.), a boiling point of 312.0±42.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 149.2±20.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
28664-35-9
Jingsj CID
J-49087-8
Molecular Formula
C6H8O3
Molecular Weight
128.126 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point26-29 °C(lit.)
Boiling Point312.0±42.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point149.2±20.7 °C
Exact Mass128.047348
PSA46.53000
LogP-0.44
Vapor Pressure0.0±1.5 mmHg at 25°C
Refractive Index1.513

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 3-Hydroxy-4,5-dimethyl-2(5H)-furanone?

The CAS number of 3-Hydroxy-4,5-dimethyl-2(5H)-furanone is 28664-35-9.

What are the molecular formula and molecular weight of 3-Hydroxy-4,5-dimethyl-2(5H)-furanone?

3-Hydroxy-4,5-dimethyl-2(5H)-furanone has molecular formula C6H8O3 and molecular weight 128.126 g/mol.

What are the upstream and downstream products of 3-Hydroxy-4,5-dimethyl-2(5H)-furanone?

For 3-Hydroxy-4,5-dimethyl-2(5H)-furanone, Upstream Products: 4-Hydroxyisoleucine.

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

Last updated:

How to cite: Jingsj. "3-Hydroxy-4,5-dimethyl-2(5H)-furanone (CAS 28664-35-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-49087-8 (accessed 2026-11-07).

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