*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : RC9044500
CHEMICAL NAME           : 19-Norpregn-4-en-20-yn-3-one,
                          17-((trimethylsilyl)oxy)-, oxime, (17-alpha)-
CAS REGISTRY NUMBER     : 82332-10-3
LAST UPDATED            : 199506
DATA ITEMS CITED        : 2
MOLECULAR FORMULA       : C21-H35-N-O2-Si
MOLECULAR WEIGHT        : 361.66
COMPOUND DESCRIPTOR     : Reproductive Effector
                          Hormone
SYNONYMS/TRADE NAMES :
   * Siloxy-norethisterone oxime
   * So-35
   * 17-((Trimethylsilyl)oxy)-19-norpregn-4-en-20-yn-3-one 3-oxime
 
                       *** HEALTH HAZARD DATA ***
 
                          ** REPRODUCTIVE DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE                    : 5 mg/kg
SEX/DURATION            : female 1-5 day(s) after conception
TOXIC EFFECTS :
   Reproductive - Fertility - pre-implantation mortality (e.g. reduction in
   number of implants per female; total number of implants per corpora lutea)
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
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE                    : 20 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 ***