2,3,4,5-Tetramethyl-2-cyclopenten-1-one

2,3,4,5-四甲基-2-环戊烯酮

Also known as: 2,3,4,5-Tetramethylcyclopent-2-en-1-one, 2,3,4,5-Tetramethyl-2-cyclopentenone, 2,3,4,5-Tetramethylcyclopent-2-enone, 2-Cyclopenten-1-one, 2,3,4,5-tetramethyl-

2,3,4,5-Tetramethyl-2-cyclopenten-1-one (CAS 54458-61-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H14O and a molecular weight of 138.207 g/mol. It is also known as 2,3,4,5-Tetramethylcyclopent-2-en-1-one, 2,3,4,5-Tetramethyl-2-cyclopentenone and 2,3,4,5-Tetramethylcyclopent-2-enone. Key properties include a boiling point of 196.1±10.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 73.3±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
54458-61-6
Jingsj CID
J-7573-2
Molecular Formula
C9H14O
Chinese Name
2,3,4,5-四甲基-2-环戊烯酮
Molecular Weight
138.207 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point196.1±10.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point73.3±0.0 °C

Frequently Asked Questions

What is the CAS number of 2,3,4,5-Tetramethyl-2-cyclopenten-1-one?

The CAS number of 2,3,4,5-Tetramethyl-2-cyclopenten-1-one is 54458-61-6.

What are the molecular formula and molecular weight of 2,3,4,5-Tetramethyl-2-cyclopenten-1-one?

2,3,4,5-Tetramethyl-2-cyclopenten-1-one has molecular formula C9H14O and molecular weight 138.207 g/mol.

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

Last updated:

How to cite: Jingsj. "2,3,4,5-Tetramethyl-2-cyclopenten-1-one (CAS 54458-61-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-7573-2 (accessed 2026-10-22).

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