(+)-Usnic acid
松萝酸
Also known as: Usnic acid, (+)-Usniacin, D-Usnic acid, (+)-Usnein, d-Usninic acid, (9bR)-2,6-Diacetyl-1,7,9-trihydroxy-8,9b-dimethyldibenzo[b,d]furan-3(9bH)-one, D-2,6-Diacetyl-7,9-dihydroxy-8,9beta-dimethyl-1,3(2H,9bH)-dibenzofurandione
(+)-Usnic acid (CAS 7562-61-0) 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, (+)-Usniacin and D-Usnic acid. Key properties include a melting point of 201-203 °C(lit.), a boiling point of 638.2±55.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 236.0±25.0 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 7562-61-0
- Jingsj CID
- J-18855-7
- 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 | 201-203 °C(lit.) |
|---|---|
| Boiling Point | 638.2±55.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 236.0±25.0 °C |
| Exact Mass | 344.089600 |
| PSA | 121.13000 |
| LogP | 2.30 |
| Vapor Pressure | 0.0±2.0 mmHg at 25°C |
| Refractive Index | 1.679 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
Activity & Biological Data
| Target | mTORC1 mTORC2 |
|---|---|
| Additional Information | [1]. Ebrahim HY, et al. Usnic Acid Benzylidene Analogues as Potent Mechanistic Target of Rapamycin Inhibitors for the Control of Breast Malignancies. J Nat Prod. 2017 Apr 28;80(4):932-952. |
Customs & Trade Information
| HS Code | 2917399090 |
|---|---|
| Summary | 2917399090 aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of (+)-Usnic acid?
The CAS number of (+)-Usnic acid is 7562-61-0.
What are the molecular formula and molecular weight of (+)-Usnic acid?
(+)-Usnic acid has molecular formula C18H16O7 and molecular weight 344.315 g/mol.
Is (+)-Usnic acid hazardous?
(+)-Usnic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(+)-Usnic acid (CAS 7562-61-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18855-7 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.