*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : HP5295050
CHEMICAL NAME           : 3(9bH)-dibenzofuranone,
                          2,6-diacetyl-1,7,9-trihydroxy-8,9b-dimethyl-, D-
CAS REGISTRY NUMBER     : 7562-61-0
LAST UPDATED            : 198910
DATA ITEMS CITED        : 2
MOLECULAR FORMULA       : C18-H16-O7
MOLECULAR WEIGHT        : 344.34
WISWESSER LINE NOTATION : T B656 EV HO BHJ B1 CQ DV1 JV1 KQ L1 MQ
COMPOUND DESCRIPTOR     : Reproductive Effector
SYNONYMS/TRADE NAMES :
   * 1,3(2H,9bH)-dibenzofurandione, 2,6-diacetyl-7,9-dihydroxy-8,9b-dimethyl-, 
    (9bR)-
   * 3(9bH)-dibenzofuranone, 2,6-diacetyl-8,9b-dimethyl-1,7,9-trihydroxy-, D-
   * (+)-Usnic acid
   * d-Usnic acid
   * Usnic acid, (R)-
   * (+)-Usninic acid
   * d-Usninic acid
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 838 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   TAKHAA Takeda Kenkyusho Ho.  Journal of the Takeda Research Laboratories.
   (Takeda Yakuhin Kogyo K.K., 2-17-85 Jusohon-machi, Yodogawa-ku, Osaka 532,
   Japan)  V.29-    1970-  Volume(issue)/page/year: 31,247,1972
 
                          ** REPRODUCTIVE DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE                    : 1500 ug/kg
SEX/DURATION            : female 1 day(s) after conception
TOXIC EFFECTS :
   Reproductive - Fertility - female fertility index (e.g. # females pregnant
   per # sperm positive females; # females pregnant per # females mated)
REFERENCE :
   NATUAS Nature.  (Nature Subscription Dept., POB 1018, Manasguan, NJ 08736)
   V.1-    1869-  Volume(issue)/page/year: 176,249,1955
 
                            *** END OF RECORD ***