U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS
This repository is under review for potential modification in compliance with Administration directives.

Details

Stereochemistry ABSOLUTE
Molecular Formula C20H32O
Molecular Weight 288.4675
Optical Activity UNSPECIFIED
Defined Stereocenters 6 / 6
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of ETHYLESTRENOL

SMILES

CC[C@]1(O)CC[C@H]2[C@@H]3CCC4=CCCC[C@@H]4[C@H]3CC[C@]12C

InChI

InChIKey=AOXRBFRFYPMWLR-XGXHKTLJSA-N
InChI=1S/C20H32O/c1-3-20(21)13-11-18-17-9-8-14-6-4-5-7-15(14)16(17)10-12-19(18,20)2/h6,15-18,21H,3-5,7-13H2,1-2H3/t15-,16+,17+,18-,19-,20-/m0/s1

HIDE SMILES / InChI

Molecular Formula C20H32O
Molecular Weight 288.4675
Charge 0
Count
MOL RATIO 1 MOL RATIO (average)
Stereochemistry ABSOLUTE
Additional Stereochemistry No
Defined Stereocenters 6 / 6
E/Z Centers 0
Optical Activity UNSPECIFIED

Description

Ethylestrenol (INN, USAN, BAN) (brand names Maxibolin, Orabolin), or ethylnandrol (JAN), also known as 17α-ethyl ester-4-en-17β-ol or as 3-deketo-17α-ethyl-19-nortestosterone, is an anabolic-androgenic steroid (AAS) with some progestogenic activity, and low androgenic activity. It is a 17α-ethylated derivative of nandrolone and lacks the 3-keto group. It was described in the literature in 1959 and approved in 1964 for testosterone deficiency in male patients.

CNS Activity

Originator

Approval Year

Targets

Primary TargetPharmacologyConditionPotency
37.9 nM [EC50]

Conditions

ConditionModalityTargetsHighest PhaseProduct
Primary
MAXIBOLIN

T1/2

ValueDoseCo-administeredAnalytePopulation
5.53 day
40 mg single, oral
ETHYLESTRENOL plasma
Rattus norvegicus

OverviewOther

Other InhibitorOther SubstrateOther Inducer




Drug as perpetrator​

Tox targets

PubMed

Patents

Sample Use Guides

In Vivo Use Guide
Male Wistar rats were trained in a one-trial-learning passive avoidance task. Ethylestrenol (1 ng, 10 ng, 100 ng, 1000 ng, or 10 mkg) was given immediately after the training trial or 1 h before the first retention test. Retention tests were given both 24 h and 48 h after acquisition. Ethylestrenol at all doses improved retention under the low footshock conditions. In groups trained with the higher footshock, the steroid-treated groups performed no better than the vehicle controls.
Route of Administration: Oral
In Vitro Use Guide
Yeast from mid-log phase growth was diluted to OD600 = 1.0 in selective medium. Diluted yeast cultures were treated with steroid concentrations ranging from 0.01 nM to 10 mM (in a final volume of 5mkl). Following incubation yeast was lysed and assayed for beta-galactosidase activity.
Substance Class Chemical
Record UNII
ADC79EK5Q8
Record Status Validated (UNII)
Record Version