3,4-Dimethylcyclopent-2-en-1-one

3,4-二甲基环戊-2-烯酮

Also known as: 2-Cyclopenten-1-one, 3,4-dimethyl-, 3,4-Dimethyl-2-cyclopenten-1-one, 3,4-Dimethylcyclopent-2-enone, 3,4-dimethyl-2-cyclopentenone, 3,4-dimethylcyclopentenone

3,4-Dimethylcyclopent-2-en-1-one (CAS 30434-64-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C7H10O and a molecular weight of 110.154 g/mol. It is also known as 2-Cyclopenten-1-one, 3,4-dimethyl-, 3,4-Dimethyl-2-cyclopenten-1-one and 3,4-Dimethylcyclopent-2-enone. Key properties include a boiling point of 167.5±10.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 58.9±9.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
30434-64-1
Jingsj CID
J-1309397-2
Molecular Formula
C7H10O
Chinese Name
3,4-二甲基环戊-2-烯酮
Molecular Weight
110.154 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point167.5±10.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point58.9±9.8 °C

Frequently Asked Questions

What is the CAS number of 3,4-Dimethylcyclopent-2-en-1-one?

The CAS number of 3,4-Dimethylcyclopent-2-en-1-one is 30434-64-1.

What are the molecular formula and molecular weight of 3,4-Dimethylcyclopent-2-en-1-one?

3,4-Dimethylcyclopent-2-en-1-one has molecular formula C7H10O and molecular weight 110.154 g/mol.

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

Last updated:

How to cite: Jingsj. "3,4-Dimethylcyclopent-2-en-1-one (CAS 30434-64-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1309397-2 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.