*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : RC8899200
CHEMICAL NAME           : 19-Norpregna-4,6-diene-3,20-dione,
                          17-alpha-hydroxy-6-methyl-, acetate
CAS REGISTRY NUMBER     : 58652-20-3
LAST UPDATED            : 199603
DATA ITEMS CITED        : 6
MOLECULAR FORMULA       : C23-H30-O4
MOLECULAR WEIGHT        : 370.53
COMPOUND DESCRIPTOR     : Reproductive Effector
                          Human
                          Hormone
SYNONYMS/TRADE NAMES :
   * 17-alpha-Acetoxy-6-methyl-19-nor-4,6-pregnadiene-3,20-dione
   * 17-alpha-Hydroxy-6-methyl-19-norpregna-4,6-diene-3,20-dione acetate
   * Nomegestrol acetate
   * 19-Norpregna-4,6-diene-3,20-dione, 17-(acetyloxy)-6-methyl-
   * TX 066
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Human - woman
DOSE/DURATION           : 1050 ug/kg/21D-I
TOXIC EFFECTS :
   Endocrine - changes in luteinizing hormone
   Endocrine - estrogenic
   Endocrine - effect on menstrual cycle
REFERENCE :
   BJOGAS British Journal of Obstetrics and Gynaecology.  (Blackwell Scientific
   Pub. Ltd., POB 88, Oxford, UK)  V.82-    1975- Volume(issue)/page/year:
   94,1199,1987
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : >2 gm/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   DRFUD4 Drugs of the Future.  (J.R. Prous, S.A., Apartado de Correos 540,
   08080 Barcelona, Spain) V.1-    1975/76-  Volume(issue)/page/year:
   9,657,1984
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : >2 gm/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   DRFUD4 Drugs of the Future.  (J.R. Prous, S.A., Apartado de Correos 540,
   08080 Barcelona, Spain) V.1-    1975/76-  Volume(issue)/page/year:
   9,657,1984
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : >2 gm/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   DRFUD4 Drugs of the Future.  (J.R. Prous, S.A., Apartado de Correos 540,
   08080 Barcelona, Spain) V.1-    1975/76-  Volume(issue)/page/year:
   9,657,1984
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : >2 gm/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   DRFUD4 Drugs of the Future.  (J.R. Prous, S.A., Apartado de Correos 540,
   08080 Barcelona, Spain) V.1-    1975/76-  Volume(issue)/page/year:
   9,657,1984
 
                          ** REPRODUCTIVE DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Subcutaneous
SPECIES OBSERVED        : Rodent - rat
DOSE                    : 5 mg/kg
SEX/DURATION            : female 4 day(s) pre-mating
TOXIC EFFECTS :
   Reproductive - Fertility - other measures of fertility
REFERENCE :
   ARZNAD Arzneimittel-Forschung. Drug Research.  (Editio Cantor Verlag,
   Postfach 1255, W-7960 Aulendorf, Fed. Rep. Ger.)  V.1-    1951-
   Volume(issue)/page/year: 33,710,1983
 
                            *** END OF RECORD ***