Comanic acid
Also known as: 4-oxo-4H-pyran-2-carboxylic acid, gamma-pyrone-2-carboxylic acid, 4-oxo-4H-pyran-2-carbonsaeure, 4-oxopyran-2-carboxylic acid, 4H-pyran-2-carboxylic acid, 4-oxo-, Comanic acid, Commanic acid, γ-Pyrone-2-carboxylic acid
Comanic acid (CAS 499-05-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H4O4 and a molecular weight of 140.094 g/mol. Key properties include a boiling point of 354.5±37.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 160.0±20.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 499-05-8
- Jingsj CID
- J-1319044-8
- Molecular Formula
- C6H4O4
- Molecular Weight
- 140.094 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 354.5±37.0 °C at 760 mmHg |
|---|---|
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 160.0±20.0 °C |
| Exact Mass | 140.010956 |
| PSA | 67.51000 |
| LogP | -0.56 |
| Vapor Pressure | 0.0±1.7 mmHg at 25°C |
| Refractive Index | 1.577 |
Customs & Trade Information
| HS Code | 2932999099 |
|---|---|
| Summary | 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. 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 Comanic acid?
The CAS number of Comanic acid is 499-05-8.
What are the molecular formula and molecular weight of Comanic acid?
Comanic acid has molecular formula C6H4O4 and molecular weight 140.094 g/mol.
What are the upstream and downstream products of Comanic acid?
For Comanic acid, Upstream Products: D-Glucuronic acid, Chelidonic acid, D-Galacturonic acid; Downstream Products: 4H-pyran-4-one, Formic Acid, Oxalic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Comanic acid (CAS 499-05-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1319044-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.