3-Methyl-2-cyclopenten-1-one
3-甲基-2-环戊烯-1-酮
Also known as: 3-Methyl-2-cyclopentenone, 3-Methylcyclopent-2-en-1-one, 1-Methyl-1-cyclopenten-3-one, 2-Cyclopenten-1-one, 3-methyl-, 3-Methyl-2-cyclopentene-1-one
3-Methyl-2-cyclopenten-1-one (CAS 2758-18-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C6H8O and a molecular weight of 96.127 g/mol. It is also known as 3-Methyl-2-cyclopentenone, 3-Methylcyclopent-2-en-1-one and 1-Methyl-1-cyclopenten-3-one. Key properties include a melting point of 3-5 °C(lit.), a boiling point of 157.5±10.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 53.1±9.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2758-18-1
- Jingsj CID
- J-46708-5
- Molecular Formula
- C6H8O
- Chinese Name
- 3-甲基-2-环戊烯-1-酮
- Molecular Weight
- 96.127 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 3-5 °C(lit.) |
|---|---|
| Boiling Point | 157.5±10.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 53.1±9.8 °C |
Frequently Asked Questions
What is the CAS number of 3-Methyl-2-cyclopenten-1-one?
The CAS number of 3-Methyl-2-cyclopenten-1-one is 2758-18-1.
What are the molecular formula and molecular weight of 3-Methyl-2-cyclopenten-1-one?
3-Methyl-2-cyclopenten-1-one has molecular formula C6H8O and molecular weight 96.127 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Methyl-2-cyclopenten-1-one (CAS 2758-18-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-46708-5 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.