(±)-Usnic acid
松萝酸
Also known as: Usnic acid, (±)-, 2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzo[b,d]furan-1,3(2H,9bH)-dione, 2,6-diacetyl-1,2,3,9b-tetrahydro-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3-dione
(±)-Usnic acid (CAS 125-46-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C18H16O7 and a molecular weight of 344.315 g/mol. It is also known as Usnic acid, (±)-, 2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzo[b,d]furan-1,3(2H,9bH)-dione and 2,6-diacetyl-1,2,3,9b-tetrahydro-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3-dione. Key properties include a melting point of 200°C, a boiling point of 594.8±50.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 219.1±23.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 125-46-2
- Jingsj CID
- J-1987117-4
- Molecular Formula
- C18H16O7
- Chinese Name
- 松萝酸
- Molecular Weight
- 344.315 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 200°C |
|---|---|
| Boiling Point | 594.8±50.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 219.1±23.6 °C |
Frequently Asked Questions
What is the CAS number of (±)-Usnic acid?
The CAS number of (±)-Usnic acid is 125-46-2.
What are the molecular formula and molecular weight of (±)-Usnic acid?
(±)-Usnic acid has molecular formula C18H16O7 and molecular weight 344.315 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(±)-Usnic acid (CAS 125-46-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1987117-4 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.