2(5H)-Furanone
Also known as: gamma-Crotonolactone, 2-Buten-1,4-olide, 2-Butenoic acid gamma-lactone, 2-Butenoic acid, 4-hydroxy-, gamma-lactone, 4-Hydroxy-2-butenoic acid gamma-lactone, 2,5-Dihydrofuran-2-one, 2,5-Dihydrofuranone, 5-Hydrofuran-2-one, Isocrotonolactone, alpha,beta-Crotonolactone, but-2-en-4-olide, Furan-2(5H)-one, 2-Oxo-2,5-dihydrofuran
2(5H)-Furanone (CAS 497-23-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H4O2 and a molecular weight of 84.073 g/mol. Key properties include a melting point of 4-5 °C(lit.), a boiling point of 203.7±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 101.1±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 497-23-4
- Jingsj CID
- J-36528-6
- Molecular Formula
- C4H4O2
- Molecular Weight
- 84.073 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 4-5 °C(lit.) |
|---|---|
| Boiling Point | 203.7±0.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 101.1±0.0 °C |
| Exact Mass | 84.021126 |
| PSA | 26.30000 |
| LogP | -0.84 |
| Vapor Pressure | 0.3±0.4 mmHg at 25°C |
| Refractive Index | 1.481 |
Customs & Trade Information
| HS Code | 2932209090 |
|---|---|
| Summary | 2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 2(5H)-Furanone?
The CAS number of 2(5H)-Furanone is 497-23-4.
What are the molecular formula and molecular weight of 2(5H)-Furanone?
2(5H)-Furanone has molecular formula C4H4O2 and molecular weight 84.073 g/mol.
What are the upstream and downstream products of 2(5H)-Furanone?
For 2(5H)-Furanone, Upstream Products: Acetylene, Furfural, α-Hydroxy-γ-butyrolactone.
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(5H)-Furanone (CAS 497-23-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36528-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.