(-)-Usnic acid
(-)-松萝酸
Also known as: (-)-USNEIN, (-)-USNIC ACID, (-)-usnic acid, l-Usnic acid, (9bS)-2,6-diacetyl-7,9-dihydroxy-8,9b-dimethyl(2H,9bH)-dibenzofuran-1,3-dione, (9bS)-7,9-Dihydroxy-2,6-diacetyl-8,9b-dimethyldibenzofuran-1,3(2H,9bH)-dione, [9bS,(-)]-2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3(2H,9bH)-dione
(-)-Usnic acid (CAS 6159-66-6) 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 344.31500 g/mol. It is also known as (-)-USNEIN, (-)-USNIC ACID and (-)-usnic acid. Key properties include a boiling point of 594.8ºC at 760 mmHg, a density of 1.49g/cm3 and a flash point of 219.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 6159-66-6
- Jingsj CID
- J-1318992-3
- Molecular Formula
- C18H16O7
- Chinese Name
- (-)-松萝酸
- Molecular Weight
- 344.31500 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 594.8ºC at 760 mmHg |
|---|---|
| Density | 1.49g/cm3 |
| Flash Point | 219.1ºC |
Frequently Asked Questions
What is the CAS number of (-)-Usnic acid?
The CAS number of (-)-Usnic acid is 6159-66-6.
What are the molecular formula and molecular weight of (-)-Usnic acid?
(-)-Usnic acid has molecular formula C18H16O7 and molecular weight 344.31500 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 6159-66-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1318992-3 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.