Ethylestrenol

Modify Date: 2025-08-25 18:01:50

Ethylestrenol Structure
Ethylestrenol structure
Common Name Ethylestrenol
CAS Number 965-90-2 Molecular Weight 288.46700
Density 1.04 g/cm3 Boiling Point 401.4ºC at 760 mmHg
Molecular Formula C20H32O Melting Point 76-78ºC
MSDS N/A Flash Point 167.4ºC

 Names

Name ethylestrenol
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.04 g/cm3
Boiling Point 401.4ºC at 760 mmHg
Melting Point 76-78ºC
Molecular Formula C20H32O
Molecular Weight 288.46700
Flash Point 167.4ºC
Exact Mass 288.24500
PSA 20.23000
LogP 5.09030
Index of Refraction 1.547

 Toxicological Information

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

 Safety Information

RIDADR UN 3249
Packaging Group III
Hazard Class 6.1(b)

 Synthetic Route

~%

Ethylestrenol Structure

Ethylestrenol

CAS#:965-90-2

Literature: Chemistry and Industry (London, United Kingdom), , p. 905

~%

Ethylestrenol Structure

Ethylestrenol

CAS#:965-90-2

Literature: Chemistry and Industry (London, United Kingdom), , p. 905

~%

Ethylestrenol Structure

Ethylestrenol

CAS#:965-90-2

Literature: Chemistry and Industry (London, United Kingdom), , p. 905

 Synonyms

orgabolin
Orgaboral
ETHYLESTRENOL
durabolin-o
maxibolin
duraboral
org-483
MFCD00198958
EINECS 213-523-6
maxibalin
orabolin
ethylnandrol
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