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Hormones and steroids

Ethylestrenol

Also known as Ethylnandrol, Maxibolin, Orabolin

CAS 965-90-2Formula C20H32OMolar mass 288.48 g/molEC 213-523-6
GHS signal word: Danger. Pictograms: Harmful or irritant, Serious health hazard 1 supplier listed
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Ethylestrenol chemical structure, C20H32O, CAS 965-90-2
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Crystals
Melting point
76 to 78
Solubility
FREELY SOL IN ALC, SOL IN CHLOROFORM, ACETONE, METHANOL, PRACTICALLY INSOL IN WATER
HS code
293729
Category
Hormones and steroids
Illustrative photo, a shrink wrapped pallet of kraft paper sacks in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Ethylestrenol?

Plain description, key identifiers and synonyms

Ethylestrenol is a 17beta-hydroxy steroid that is estrane containing a double bond between positions 4 and 5 and substituted by an ethyl group and a hydroxy group at the 17alpha and 17beta positions, respectively. It is an anabolic steroid that has little androgenic effect and only slight progestational activity. It has been used to promote growth in boys with delayed bone growth. It has a role as an anabolic agent. It is a tertiary alcohol and a 17beta-hydroxy steroid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(8R,9S,10R,13S,14S,17S)-17-ethyl-13-methyl-2,3,6,7,8,9,10,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-17-ol
CAS number
965-90-2 CAS number cross-checked
EC number
213-523-6
Molecular formula
C20H32O
UNII
ADC79EK5Q8
InChIKey
AOXRBFRFYPMWLR-XGXHKTLJSA-N
InChI
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
Canonical SMILES
CCC1(O)CCC2C3CCC4=CCCCC4C3CCC21C
Isomeric SMILES
CC[C@@]1(CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CCC4=CCCC[C@H]34)C)O

Synonyms

  • Ethylnandrol
  • Maxibolin
  • Orabolin
  • Duraboral
  • Durabolin-O
  • Ethyloestrenol
  • Maxibalin
  • Neodurabolin
  • Orgabolin
  • Orgaboral
  • Etilestrenol
  • Ethylestrenolum
  • Etilestrenolo
  • 17alpha-Ethylestr-4-en-17beta-ol
  • 19-Nor-17alpha-pregn-4-en-17beta-ol
  • 17alpha-Ethyl-17beta-hydroxy-4-estrene
  • 19-Norpregn-4-en-17-ol, (17alpha)-
  • 17beta-Hydroxy-17alpha-ethyl-19-nor-4-androstene
  • (8R,9S,10R,13S,14S,17S)-17-ethyl-13-methyl-2,3,6,7,8,9,10,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-17-ol
  • 19-Nor-17alpha-pregn-4-en-17-ol
  • (8R,9S,10R,13S,14S,17S)-17-ethyl-13-methyl-2,3,6,7,8,9,10,11,12,14,15,16-dodecahydro-1H-cyclopenta(a)phenanthren-17-ol
  • (1S,2R,10R,11S,14S,15S)-14-ethyl-15-methyltetracyclo(8.7.0.02,?.011,1?)heptadec-6-en-14-ol
  • Ethylnandrol (JAN)
  • (17alpha)-19-norpregn-4-en-17-ol
  • Ethyloestrenolum
Show all 31 synonyms
  • Ethylestrenol (1.0mg/ml in Acetonitrile)
  • Estr-4-en-17beta-ol, 17-ethyl-
  • (17-alpha)-19-Norpregn-4-en-17-ol
  • Orabolin (TN)
  • 19-Nor-17-alpha-pregn-4-en-17-ol
  • 19-Norpregn-4-en-17-ol, (17-alpha)-

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Crystalsexp.
Odour
ODORLESSexp.
Taste
TASTELESSexp.
Melting point
76 to 78exp.
Solubility
FREELY SOL IN ALC, SOL IN CHLOROFORM, ACETONE, METHANOL, PRACTICALLY INSOL IN WATERexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
288.48 g/molcalc.
Exact mass
288.2453 Dacalc.
LogP (octanol/water)
5.09calc.
Topological polar surface area
20.23 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
1calc.
Heavy atoms
21calc.
Rings
4calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.9calc.
Formal charge
0calc.
Stereocentres
6calc.
Lipinski rule of five
Passes (1 violation)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1=C2CCC3C4CCCC4CCC3C2CCC1

C1=C2CCC3C4CCCC4CCC3C2CCC1

4 rings, 17 atoms.

99 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H302Harmful if swallowed.
  • H312Harmful in contact with skin.
  • H332Harmful if inhaled.
  • H351Suspected of causing cancer.
  • H360May damage fertility or the unborn child.
Precautionary statements (16)
  • P203Obtain, read and follow all safety instructions before use.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P317Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Ethylestrenol suppliers

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Where suppliers are based

1 supplier in 1 country

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Ethylestrenol price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Pharmacological actions

  • Anabolic Agents

Roles

  • agonist
  • anabolic agent
  • hormone
  • molecular messenger

Functional uses

  • Pharmaceutical

How it is made

Preparation: Szpilfogel, de Winter, US 2878267 (1959 to Organon).

Solution of 3-ethoxy-17alpha-ethylestradiol in ether is reacted in cold with dry ethylamine...lithium...added in small pieces. Following...solvent extraction...crude dry product is distributed between equal parts of petroleum ether & 70% methanol. Petroleum ether layer is separated & evaporated to yield ethylestrenol.

Regulatory status

Inventories, regulations and trade controls that list this substance

Controls

  • US DEA controlled substance or listed chemical

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Ethylestrenol is traded under.

HS 2937.29Indicative HS code

Steroidal hormones, their derivatives and structural analogues, other

World exports in 2024
$2.32B
+5.7% vs 2023, imports $2.41B
2019 to 2024
Top exporters
  1. Belgium25.3%
  2. United States24.9%
  3. China13.0%
Top importers
  1. Italy18.0%
  2. Canada13.0%
  3. Belgium12.2%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Ethylestrenol is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Ethylestrenol, based on the data on this page

What is Ethylestrenol?

Ethylestrenol is a 17beta-hydroxy steroid that is estrane containing a double bond between positions 4 and 5 and substituted by an ethyl group and a hydroxy group at the 17alpha and 17beta positions, respectively. It is an anabolic steroid that has little androgenic effect and only slight progestational activity.

What is the CAS number of Ethylestrenol?

The CAS registry number of Ethylestrenol is 965-90-2.

What is the molecular formula and weight of Ethylestrenol?

The molecular formula of Ethylestrenol is C20H32O and its molar mass is 288.48 g/mol.

What is Ethylestrenol used for?

Known uses and roles of Ethylestrenol include hormones and steroids in pharmaceuticals, agonist, anabolic agent, hormone, molecular messenger and 2 more.

Is Ethylestrenol hazardous?

Ethylestrenol carries the GHS signal word "Danger". Main hazards: harmful if swallowed, harmful in contact with skin, harmful if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Ethylestrenol?

Ethylestrenol is usually classified under HS code 293729 (Steroidal hormones, their derivatives and structural analogues, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Ethylestrenol?

CompoundList lists 1 supplier of Ethylestrenol in India. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Ethylestrenol in India?

1 supplier in India list Ethylestrenol on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Ethylestrenol?

Suppliers quote Ethylestrenol on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Ethylestrenol

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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