*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : RC8960090
CHEMICAL NAME           : 19-Norpregna-4,9,11-trien-20-yn-3-one, 17-hydroxy-,
                          oxime, (17-alpha)-
CAS REGISTRY NUMBER     : 19636-23-8
BEILSTEIN REFERENCE NO. : 2175051
LAST UPDATED            : 199712
DATA ITEMS CITED        : 2
MOLECULAR FORMULA       : C20-H23-N-O2
MOLECULAR WEIGHT        : 309.44
COMPOUND DESCRIPTOR     : Reproductive Effector
                          Hormone
SYNONYMS/TRADE NAMES :
   * 19-Nor-17-alpha-pregna-4,9,11-trien-20-yn-3-one, 17-hydroxy-, oxime
   * Oxime,17-hydroxy-19-norpregna-4,9,11-trien-20-yn-3-one
   * 3-Oxidido 17-alpha-ethynyl 17-beta-hydroxy estra-4,9,11-triene
   * R 2010 oxime
   * So 57
 
                       *** 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           : 22 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   FMXXAJ French Medicament Patent Document.  (U.S. Patent and Trademark
   Office, Foreign Patents, Washington, DC 20231)  Discontinued.
   Volume(issue)/page/year: #4826M
 
                          ** REPRODUCTIVE DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE                    : 2 mg/kg
SEX/DURATION            : female 6-9 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 :
   SCYYDZ Shengzhi Yu Biyun.  Reproduction and Contraception.  (China
   International Book Trading Corp., POB 2820, Beijing, Peop. Rep. China) 1980-
    Volume(issue)/page/year: 10(3),67,1990
 
                            *** END OF RECORD ***