2-hydroxy-3-methylcyclopent-2-en-1-one
Also known as: Methyl cyclopentenolone, 2-Hydroxy-3-methyl-2-cyclopenten-1-one, 2-Hydroxy-3-methyl-2-cyclopentenone, 2-Hydroxy-3-methylcyclopent-2-enone, Cyclotene, Corylone, FEMA 2700
2-hydroxy-3-methylcyclopent-2-en-1-one (CAS 80-71-7) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C6H8O2 and a molecular weight of 112.127 g/mol. Key properties include a melting point of 104-108°C, a boiling point of 212.2±40.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 84.4±19.9 °C. It is classified under GHS with signal word Danger and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H334 — May cause allergy or asthma symptoms if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 80-71-7
- Jingsj CID
- J-42398-3
- Molecular Formula
- C6H8O2
- Molecular Weight
- 112.127 g/mol
- Category
- Alcohols
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 104-108°C |
|---|---|
| Boiling Point | 212.2±40.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 84.4±19.9 °C |
| Exact Mass | 112.052429 |
| PSA | 37.30000 |
| LogP | 0.30 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.549 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H334 — May cause allergy or asthma symptoms if inhaled
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2914400090 |
|---|---|
| Summary | 2914400090 other ketone-alcohols and ketone-aldehydes。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 2-hydroxy-3-methylcyclopent-2-en-1-one?
The CAS number of 2-hydroxy-3-methylcyclopent-2-en-1-one is 80-71-7.
What are the molecular formula and molecular weight of 2-hydroxy-3-methylcyclopent-2-en-1-one?
2-hydroxy-3-methylcyclopent-2-en-1-one has molecular formula C6H8O2 and molecular weight 112.127 g/mol.
Is 2-hydroxy-3-methylcyclopent-2-en-1-one hazardous?
2-hydroxy-3-methylcyclopent-2-en-1-one has GHS signal word Danger and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H334 — May cause allergy or asthma symptoms if inhaled.
What are the upstream and downstream products of 2-hydroxy-3-methylcyclopent-2-en-1-one?
For 2-hydroxy-3-methylcyclopent-2-en-1-one, Upstream Products: 3-Methyl-1,2-cyclopentanediol, Propionaldehyde; Downstream Products: Levulinic acid, Dihydrojasmone, 3-Ethyl-2-hydroxy-2-cyclopenten-1-one.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-hydroxy-3-methylcyclopent-2-en-1-one (CAS 80-71-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42398-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.