(±)-Usnic acid

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Names

[ CAS No. ]:
125-46-2

[ Name ]:
(±)-Usnic acid

[Synonym ]:
Usnic acid
MFCD00065294
EINECS 231-456-0
(±)-Usnic acid
2,6-Diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzo[b,d]furan-1,3(2H,9bH)-dione
2,6-diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3-dione
1,3(2H,9bH)-Dibenzofurandione, 2,6-diacetyl-7,9-dihydroxy-8,9b-dimethyl-

Chemical & Physical Properties

[ Density]:
1.5±0.1 g/cm3

[ Boiling Point ]:
594.8±50.0 °C at 760 mmHg

[ Melting Point ]:
200°C

[ Molecular Formula ]:
C18H16O7

[ Molecular Weight ]:
344.315

[ Flash Point ]:
219.1±23.6 °C

[ Exact Mass ]:
344.089600

[ PSA ]:
117.97000

[ LogP ]:
2.68

[ Vapour Pressure ]:
0.0±1.7 mmHg at 25°C

[ Index of Refraction ]:
1.643

[ Storage condition ]:
2-8C

MSDS

Click to get detail MSDS

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
HP5270000
CHEMICAL NAME :
1,3(2H,9bH)-dibenzofurandione, 2,6-diacetyl-7,9-dihydroxy-8,9b-dimethyl-
CAS REGISTRY NUMBER :
125-46-2
LAST UPDATED :
199701
DATA ITEMS CITED :
6
MOLECULAR FORMULA :
C18-H16-O7
MOLECULAR WEIGHT :
344.34
WISWESSER LINE NOTATION :
T B656 CV EV HO FU BHT&&J B1 DV1 JV1 KQ L1 MQ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
75 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
25 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD - Lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
>500 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :
Cytogenetic analysis
TEST SYSTEM :
Mammal - species unspecified Cells - not otherwise specified
DOSE/DURATION :
3750 ug/L
REFERENCE :
PHMCAA Pharmacologist. (American Soc. for Pharmacology and Experimental Therapeutics, 9650 Rockville Pike, Bethesda, MD 20014) V.1- 1959- Volume(issue)/page/year: 12,280,1970

Safety Information

[ Hazard Codes ]:
Xn:Harmful;

[ Risk Phrases ]:
R22

[ Safety Phrases ]:
S22-S24/25

[ RTECS ]:
HP5270000

[ HS Code ]:
2917399090

Customs

[ 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%

Related Compounds

  • VERBENONE, (DL)
  • (-)-TRANS-45-BIS(IODOMETHYL)-2,2-DIMETHYL-13-DIOXOLANE
  • 2,6-diacetyl-1,7,9-trihydroxy-8,9b-dimethyl-4a-phenylsulfanyl-4H-dibenzofuran-3-one
  • 2,6-Diacetyl-9-acetyloxy-7-hydroxy-8,9b-dimethyl-1,3(2H,9bH)-dibenzofurandione
  • 2H-Furo[2,3-f][2]benzopyran-2,8(3H)-dione,5a-ethenyloctahydro-4-hydroxy-3,9-bis(methylene)-, (3aR,4S,5aR,9aR,9bR)-rel-
  • 2,6-diacetyl-7,9-dihydroxy-8,9b-dimethyldibenzofuran-1,3(2H,9bH)-dione, sodium salt