-
Name
USNIC ACID
- EINECS 231-456-0
- CAS No. 125-46-2
- Density 1.49 g/cm3
- Solubility
- Melting Point 200 °C
- Formula C18H16O7
- Boiling Point 594.8 °C at 760 mmHg
- Molecular Weight 344.321
- Flash Point 219.1 °C
- Transport Information
- Appearance
- Safety 22-24/25
-
Risk Codes
Xn:Harmful;
-
Molecular Structure
- Hazard Symbols R22:;
- Synonyms Usnic acid(8CI);NSC 8517;Usnein;Usniacin;Usno;
- PSA 117.97000
- LogP 1.49980
Usnic acid Chemical Properties
IUPAC Name: 2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3-dione
The MF of 2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3-dione (125-46-2) is C18H16O7.
The MW of 2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3-dione (125-46-2) is 344.32.
Synonyms of 2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3-dione (125-46-2):
Usnic acid ; 1,3(2H,9bH)-Dibenzofurandione, 2,6-diacetyl-7,9-dihydroxy-8,9b-dimethyl- ; 2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzo[b,d]furan-1,3(2H,9bH)-dione
Product Categories: Miscellaneous Natural Products
Form: Yellow orthorhombic prism-shaped crystal
Index of Refraction: 1.643
EINECS: 231-456-0
Density: 1.49 g/ml
Flash Point: 219.1 °C
Boiling Point: 594.8 °C
Melting Point: 200 °C
Merck: 9893
Usnic acid Uses
2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3-dione (125-46-2) is broad-spectrum antibiotics used for most Gram-positive bacteria with strong inhibition, but also inhibit the growth of Mycobacterium tuberculosis.
Usnic acid Toxicity Data With Reference
| 1. | dnd-esc 20 µmol/L | MUREAV Mutation Research. 89 (1981),95. | ||
| 2. | cyt-mam:oth 3750 µg/L | PHMCAA Pharmacologist. 12 (1970),280. | ||
| 3. | ivn-mus LD50:25 mg/kg | MEIEDD Merck Index. 10 (1983),1414. | ||
| 4. | scu-mus LD50:75 mg/kg | 85GDA2 CRC Handbook of Antibiotic Compounds. 9 (1982),89. | ||
| 5. | ivn-mus LD50:25 mg/kg | MEIEDD Merck Index. 10 (1983),1414. | ||
| 6. | orl-rbt LD50:500 mg/kg | ARZNAD Arzneimittel-Forschung. Drug Research. 5 (1955),507. |
Usnic acid Consensus Reports
Reported in EPA TSCA Inventory.
Usnic acid Safety Profile
Poison by subcutaneous and intravenous routes. Moderately toxic by ingestion. Mutation data reported. When heated to decomposition it emits acrid smoke and fumes. Used as an antibacterial and antimitotic agent.
Safety information of 2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3-dione (125-46-2):
Safety Statements
22 Do not breathe dust
24/25 Avoid contact with skin and eyes
RTECS HP5270000
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