Methyl 2-oxo-2H-pyran-3-carboxylate
Also known as: 3-Carbomethoxy-2-pyrone, Methyl 2-pyrone-3-carboxylate, 2-Oxo-2H-pyran-3-carboxylic acid methyl ester, 2H-Pyran-3-carboxylic acid, 2-oxo-, methyl ester, methyl 2-oxopyran-3-carboxylate
Methyl 2-oxo-2H-pyran-3-carboxylate (CAS 25991-27-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H6O4 and a molecular weight of 154.120 g/mol. Key properties include a melting point of 75-77ºC(lit.), a boiling point of 354.4±0.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 158.7±24.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 25991-27-9
- Jingsj CID
- J-812775-1
- Molecular Formula
- C7H6O4
- Molecular Weight
- 154.120 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 75-77ºC(lit.) |
|---|---|
| Boiling Point | 354.4±0.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 158.7±24.4 °C |
| Exact Mass | 154.026611 |
| PSA | 56.51000 |
| LogP | -0.66 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.513 |
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 Methyl 2-oxo-2H-pyran-3-carboxylate?
The CAS number of Methyl 2-oxo-2H-pyran-3-carboxylate is 25991-27-9.
What are the molecular formula and molecular weight of Methyl 2-oxo-2H-pyran-3-carboxylate?
Methyl 2-oxo-2H-pyran-3-carboxylate has molecular formula C7H6O4 and molecular weight 154.120 g/mol.
What are the upstream and downstream products of Methyl 2-oxo-2H-pyran-3-carboxylate?
For Methyl 2-oxo-2H-pyran-3-carboxylate, Downstream Products: 3-Methoxycarbonylphenylboronic acid pinacol ester, Methyl 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate, 2-oxo-2H-pyran-3-carbonyl chloride.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Methyl 2-oxo-2H-pyran-3-carboxylate (CAS 25991-27-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-812775-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.