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Steroids and sterols

Trestolone

Also known as MENT, 7alpha-Methyl-19-nortestosterone, 7alpha-Methylnandrolone

CAS 3764-87-2Formula C19H28O2Molar mass 288.43 g/molEC 658-091-3
GHS signal word: Danger. Pictograms: Harmful or irritant, Serious health hazard
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Trestolone chemical structure, C19H28O2, CAS 3764-87-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
3764-87-2
Formula
C19H28O2
Molar mass
288.43 g/mol
EC number
658-091-3
HS code
291440
Category
Steroids and sterols

What is Trestolone?

Plain description, key identifiers and synonyms

Trestolone is a chemical substance with the molecular formula C19H28O2 and a molar mass of 288.43 g/mol. Its CAS registry number is 3764-87-2. The IUPAC name is (7R,8R,9S,10R,13S,14S,17S)-17-hydroxy-7,13-dimethyl-2,6,7,8,9,10,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(7R,8R,9S,10R,13S,14S,17S)-17-hydroxy-7,13-dimethyl-2,6,7,8,9,10,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-one
CAS number
3764-87-2 CAS number cross-checked
EC number
658-091-3
Molecular formula
C19H28O2
UNII
40P3287I94
InChIKey
YSGQGNQWBLYHPE-CFUSNLFHSA-N
InChI
InChI=1S/C19H28O2/c1-11-9-12-10-13(20)3-4-14(12)15-7-8-19(2)16(18(11)15)5-6-17(19)21/h10-11,14-18,21H,3-9H2,1-2H3/t11-,14+,15-,16+,17+,18-,19+/m1/s1
Canonical SMILES
CC1CC2=CC(=O)CCC2C2CCC3(C)C(O)CCC3C12
Isomeric SMILES
C[C@@H]1CC2=CC(=O)CC[C@@H]2[C@@H]3[C@@H]1[C@@H]4CC[C@@H]([C@]4(CC3)C)O

Synonyms

  • MENT
  • 7alpha-Methyl-19-nortestosterone
  • 7alpha-Methylnandrolone
  • 19-Nor-methyltestosterone
  • 17beta-Hydroxy-7alpha-methylestr-4-en-3-one
  • 19-Nor-7alpha-methyltestosterone
  • MENTR
  • 7alpha-Methyl-3-oxo-4-estren-17beta-ol
  • 17beta-Hydroxy-7alpha-methylestr-4-enone
  • 7alpha-Methyl-17beta-hydroxy-4-estren-3-one
  • 17-hydroxy-7-methyl-4-estren-3-one
  • RU 27333
  • HMEO
  • MENT steroid
  • (1S,3aS,3bR,4R,9aR,9bS,11aS)-1-hydroxy-4,11a-dimethyl-1H,2H,3H,3aH,3bH,4H,5H,7H,8H,9H,9aH,9bH,10H,11H,11aH-cyclopenta[a]phenanthren-7-one
  • 7-methyl-19-nortestosterone
  • (1S,3aS,3bR,4R,9aR,9bS,11aS)-1-hydroxy-4,11a-dimethyl-1H,2H,3H,3aH,3bH,4H,5H,7H,8H,9H,9aH,9bH,10H,11H,11aH-cyclopenta(a)phenanthren-7-one
  • (7R,8R,9S,10R,13S,14S,17S)-17-hydroxy-7,13-dimethyl-2,6,7,8,9,10,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-one
  • Trestolonum
  • Trestolone (1.0mg/ml in Acetonitrile)
  • Trestolona
  • 7a-methyl-19-nortestosterone,17ss-Hydroxy-7a-methylestr-4-en-3-one
  • Trestolone (1 mg/ml in Acetonitrile)
  • 17beta-hydroxy-7alpha-methyl-estr-4-en-3-one
  • Estr-4-en-3-one, 17beta-hydroxy-7alpha-methyl-
Show all 27 synonyms
  • (7alpha,17beta)-17-hydroxy-7-methylestr-4-en-3-one
  • Estr-4-en-3-one, 17-hydroxy-7-methyl-, (7alpha,17beta)-

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
288.43 g/molcalc.
Exact mass
288.2089 Dacalc.
LogP (octanol/water)
3.74calc.
Topological polar surface area
37.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
21calc.
Rings
4calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.84calc.
Formal charge
0calc.
Stereocentres
7calc.
Lipinski rule of five
Passes (0 violations)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, O=C1C=C2CCC3C4CCCC4CCC3C2CC1

O=C1C=C2CCC3C4CCCC4CCC3C2CC1

4 rings, 18 atoms.

1,419 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.
  • H351Suspected of causing cancer.
  • H360May damage fertility or the unborn child.
  • H362May cause harm to breast-fed children.
Precautionary statements (11)
  • P203Obtain, read and follow all safety instructions before use.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P263Avoid contact during pregnancy and while nursing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P330Rinse mouth.
  • 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

Trestolone suppliers

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Trestolone 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

  • Contraceptives, Postcoital, Hormonal

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2914.40Indicative HS code

Ketone-alcohols and ketone-aldehydes

World exports in 2024
$199M
+2.5% vs 2023, imports $247M
2019 to 2024
Top exporters
  1. China29.5%
  2. Germany14.4%
  3. Netherlands12.7%
Top importers
  1. United States37.2%
  2. Netherlands8.5%
  3. Germany6.4%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Trestolone is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Trestolone?

Trestolone is a chemical substance with the molecular formula C19H28O2 and a molar mass of 288.43 g/mol. Its CAS registry number is 3764-87-2. The IUPAC name is (7R,8R,9S,10R,13S,14S,17S)-17-hydroxy-7,13-dimethyl-2,6,7,8,9,10,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-one.

What is the CAS number of Trestolone?

The CAS registry number of Trestolone is 3764-87-2.

What is the molecular formula and weight of Trestolone?

The molecular formula of Trestolone is C19H28O2 and its molar mass is 288.43 g/mol.

What is Trestolone used for?

Known uses and roles of Trestolone include contraceptives, postcoital, hormonal.

Is Trestolone hazardous?

Trestolone carries the GHS signal word "Danger". Main hazards: harmful if swallowed, suspected of causing cancer, may damage fertility or the unborn child. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Trestolone?

Trestolone is usually classified under HS code 291440 (Ketone-alcohols and ketone-aldehydes). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Trestolone?

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What is the price of Trestolone?

Suppliers quote Trestolone 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 Trestolone

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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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