19-Norpregn-4-en-17-ol,(17a)- cas no:965-90-2

Name19-Norpregn-4-en-17-ol,(17a)-
CAS965-90-2
Synonyms17a-Ethylestr-4-en-17b-ol;17b-Hydroxy-17a-ethylestr-4-ene;Duraboral;Estrenolethyl;Maxibolin;Neodurabolin;Orgabolin;Orgaboral;19-Nor-17a-pregn-4-en-17-ol (6CI,8CI);17a-Ethyl-17b-hydroxyestr-4-ene;17a-Ethyl-19-norpregn-4-en-17-ol;
EINECS(EC#)213-523-6
Molecular FormulaC₂₀H₃₂O
Molecular Weight288.47

refractive index1.547

Hazardclass6.1(b)

Safety

An experimental teratogen. Other experimental reproductive effects. When heated to decomposition it emits acrid smoke and irritating fumes.Safety information of Ethylestrenol (CAS NO.965-90-2):
RIDADR? 3249
HazardClass? 6.1(b)
PackingGroup? III

CHEMICAL IDENTIFICATION

RTECS NUMBER :

RC8961100

CHEMICAL NAME :

19-Nor-17-alpha-pregn-4-en-17-ol

CAS REGISTRY NUMBER :

965-90-2

LAST UPDATED :

199103

DATA ITEMS CITED :

6

MOLECULAR FORMULA :

C20-H32-O

MOLECULAR WEIGHT :

288.52

WISWESSER LINE NOTATION :

L E5 B666 MUTJ E1 FQ F2

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 :

>666700 ug/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

REFERENCE :

NIIRDN Drugs in Japan (Ethical Drugs). (Yakugyo Jiho Co., Ltd., Tokyo, Japan) Volume(issue)/page/year: 6,113,1982 ** REPRODUCTIVE DATA **

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

1 gm/kg

SEX/DURATION :

female 2-6 day(s) after conception

TOXIC EFFECTS :

Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants) Reproductive - Fertility - abortion

REFERENCE :

FESTAS Fertility and Sterility. (American Fertility Soc., 608 13th Ave. S, Birmingham, AL 35282) V.1- 1950- Volume(issue)/page/year: 22,735,1971

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

1 gm/kg

SEX/DURATION :

female 15-19 day(s) after conception

TOXIC EFFECTS :

Reproductive - Effects on Newborn - stillbirth

REFERENCE :

FESTAS Fertility and Sterility. (American Fertility Soc., 608 13th Ave. S, Birmingham, AL 35282) V.1- 1950- Volume(issue)/page/year: 22,735,1971

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

20 mg/kg

SEX/DURATION :

female 17-20 day(s) after conception

TOXIC EFFECTS :

Reproductive - Specific Developmental Abnormalities - urogenital system

REFERENCE :

ECJPAE Endocrinologia Japonica. (Japan Pub. Trading Co., Ltd., POB 5030, Tokyo International, Tokyo, Japan) V.1- 1954- Volume(issue)/page/year: 24,77,1977

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

15 mg/kg

SEX/DURATION :

male 15 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Paternal Effects - prostate, seminal vesicle, Cowper's gland, accessory glands

REFERENCE :

IJMRAQ Indian Journal of Medical Research. (Indian Council of Medical Research, Ansari Nagar, New Delhi 110 029, India) V.1- 1913- Volume(issue)/page/year: 59,768,1971

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Subcutaneous

DOSE :

28 mg/kg

SEX/DURATION :

female 14 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Maternal Effects - ovaries, fallopian tubes Reproductive - Maternal Effects - uterus, cervix, vagina Reproductive - Fertility - other measures of fertility

REFERENCE :

CCPTAY Contraception. (Geron-X, Inc., POB 1108, Los Altos, CA 94022) V.1- 1970- Volume(issue)/page/year: 5,489,1972