3-Methyl-2-cyclopenten-1-one
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. 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-46708-3
- Molecular Formula
- C6H8O
- 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 |
| Exact Mass | 96.057518 |
| PSA | 17.07000 |
| LogP | 0.54 |
| Vapor Pressure | 2.7±0.3 mmHg at 25°C |
| Refractive Index | 1.482 |
| Additional Property | miscible |
Customs & Trade Information
| HS Code | 2914299000 |
|---|---|
| Summary | 2914299000. other cyclanic, cyclenic or cyclotherpenic ketones without other oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0% |
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.
What are the upstream and downstream products of 3-Methyl-2-cyclopenten-1-one?
For 3-Methyl-2-cyclopenten-1-one, Upstream Products: 2,5-Hexanedione, Methylcyclopentene, acetic acid; Downstream Products: Dihydrojasmone, (R)-(+)-3-Methylcyclopentanone, 3-Methylcyclopentanol.
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-Methyl-2-cyclopenten-1-one (CAS 2758-18-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-46708-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.