RTECS NUMBER : RC9033000
CHEMICAL NAME : 19-Nor-17-alpha-pregn-4-en-20-yn-3-one, 17-hydroxy-,
oxime
CAS REGISTRY NUMBER : 23965-86-8
BEILSTEIN REFERENCE NO. : 2300127
LAST UPDATED : 199612
DATA ITEMS CITED : 3
MOLECULAR FORMULA : C20-H27-N-O2
MOLECULAR WEIGHT : 313.48
COMPOUND DESCRIPTOR : Reproductive Effector
Hormone
SYNONYMS/TRADE NAMES :
* 17-Hydroxy-19-nor-17-alpha-pregn-4-en-20-yn-3-one oxime
* Norethindrone oxime
* Norethisterone-3-oxime
* 19-Norpregn-4-en-20-yn-3-one, 17-hydroxy-, oxime, (17-alpha)-
* SO-33
*** HEALTH HAZARD DATA ***
** REPRODUCTIVE DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE : 2500 ug/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 : 4 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
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rabbit
DOSE : 6 mg/kg
SEX/DURATION : female 2-4 day(s) after conception
TOXIC EFFECTS :
Reproductive - Maternal Effects - ovaries, fallopian tubes
Reproductive - Fertility - pre-implantation mortality (e.g. reduction in
number of implants per female; total number of implants per corpora lutea)
REFERENCE :
CCPTAY Contraception. (Geron-X, Inc., POB 1108, Los Altos, CA 94022) V.1-
1970- Volume(issue)/page/year: 36,667,1987
*** END OF RECORD ***
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