*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : UR0801500
CHEMICAL NAME           : Pyrazolo(1,5-a)pyrimidin-7(4H)-one,
                          4-ethyl-2-(2-thienyl)-
CAS REGISTRY NUMBER     : 149246-67-3
LAST UPDATED            : 199406
DATA ITEMS CITED        : 1
MOLECULAR FORMULA       : C12-H11-N3-O-S
MOLECULAR WEIGHT        : 245.32
COMPOUND DESCRIPTOR     : Drug
SYNONYMS/TRADE NAMES :
   * 4,7-Dihydro-4-ethyl-2-(2-thienyl)pyrazolo(1,5-a)pyrimidin-7-one
   * 4-Ethyl-2-(2-thienyl)pyrazolo(1,5-a)pyrimidin-7(4H)-one
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : >500 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   JPMSAE Journal of Pharmaceutical Sciences.  (American Pharmaceutical Assoc.,
   2215 Constitution Ave., NW, Washington, DC 20037)  V.50-    1961-
   Volume(issue)/page/year: 82,480,1993
 
                            *** END OF RECORD ***