5,5-Dimethyldihydrofuran-2(3H)-one

Also known as: 2(3H)-Furanone, dihydro-5,5-dimethyl-, 4,4-DIMETHYL-GAMMA-BUTYRO LACTONE, 4,4-dimethylbutan-4-olide, 4-Methyl-4-hydroxypentanoic acid lactone, 4-Methyl-4-pentanolide, 4-Methylpentan-4-olide, 5,5-DIMETHYL-DIHYDRO-FURAN-2-ONE, 5,5-dimethyloxolan-2-one, AKOS BC-1251

5,5-Dimethyldihydrofuran-2(3H)-one (CAS 3123-97-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H10O2 and a molecular weight of 114.14200 g/mol. Key properties include a boiling point of 191.5ºC at 760mmHg, a density of 0.995g/cm3 and a flash point of 66.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3123-97-5
Jingsj CID: J-1511165-6
Molecular Formula: C₆H₁₀O₂
Molecular Weight: 114.14200 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	191.5ºC at 760mmHg
Density	0.995g/cm3
Flash Point	66.9ºC
Exact Mass	114.06800
PSA	26.30000
LogP	1.10200
Refractive Index	1.428

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 5,5-Dimethyldihydrofuran-2(3H)-one?

The CAS number of 5,5-Dimethyldihydrofuran-2(3H)-one is 3123-97-5.

What are the molecular formula and molecular weight of 5,5-Dimethyldihydrofuran-2(3H)-one?

5,5-Dimethyldihydrofuran-2(3H)-one has molecular formula C6H10O2 and molecular weight 114.14200 g/mol.

What are the upstream and downstream products of 5,5-Dimethyldihydrofuran-2(3H)-one?

For 5,5-Dimethyldihydrofuran-2(3H)-one, Upstream Products: Ethyl levulinate, Isobutylene, iodomethane; Downstream Products: 4,4-Dimethyl-3,4-dihydro-1(2H)-naphthalenone, 2,2-Dimethylglutaric acid, 2,2-Dimethylcyclopropanecarboxylic acid.

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. "5,5-Dimethyldihydrofuran-2(3H)-one (CAS 3123-97-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1511165-6 (accessed 2026-11-09).

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