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Steroids and sterols

Methasterone

Also known as Superdrol, Methasteron, Methyldrostanolone

CAS 3381-88-2Formula C21H34O2Molar mass 318.50 g/molEC 111-746-2
GHS signal word: Danger. Pictograms: Serious health hazard 2 suppliers listed
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Methasterone chemical structure, C21H34O2, CAS 3381-88-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
3381-88-2
Formula
C21H34O2
Molar mass
318.50 g/mol
EC number
111-746-2
HS code
291440
Category
Steroids and sterols

What is Methasterone?

Plain description, key identifiers and synonyms

17beta-Hydroxy-2alpha,17-dimethyl-5alpha-androstan-3-one is a 3-oxo-5alpha-steroid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2R,5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-2,10,13,17-tetramethyl-2,4,5,6,7,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-3-one
CAS number
3381-88-2 CAS number cross-checkedOther or deprecated CAS: 88979-44-6
EC number
111-746-2
Molecular formula
C21H34O2
UNII
GH88DY98MR
InChIKey
QCWCXSMWLJFBNM-FOVYBZIDSA-N
InChI
InChI=1S/C21H34O2/c1-13-12-19(2)14(11-18(13)22)5-6-15-16(19)7-9-20(3)17(15)8-10-21(20,4)23/h13-17,23H,5-12H2,1-4H3/t13-,14+,15-,16+,17+,19+,20+,21+/m1/s1
Canonical SMILES
CC1CC2(C)C(CCC3C2CCC2(C)C3CCC2(C)O)CC1=O
Isomeric SMILES
C[C@@H]1C[C@]2([C@@H](CC[C@@H]3[C@@H]2CC[C@]4([C@H]3CC[C@]4(C)O)C)CC1=O)C

Synonyms

  • Superdrol
  • Methasteron
  • Methyldrostanolone
  • 17-Methyldrostanolone
  • (2R,5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-2,10,13,17-tetramethyl-2,4,5,6,7,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthren-3-one
  • 2alpha17alpha-dimethyletiocholan-3-on-17beta-ol
  • 17beta-hydroxy-2alpha,17alpha-dimethyl-5alpha-androstane-3-one
  • 2alpha,17alpha-dimethyl-17beta-hydroxy-5alpha-androstane-3-one
  • Androstan-3-one, 17-hydroxy-2,17-dimethyl-, (2alpha,5alpha,17.beta.)-
  • (2R,5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-2,10,13,17-tetramethyl-2,4,5,6,7,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta(a)phenanthren-3-one
  • Androstan-3-one, 17-hydroxy-2,17-dimethyl-, (2alpha,5alpha,17beta)-
  • 2alpha,17alpha-Dimethyldihydrotestosterone
  • 17beta-Hydroxy-2alpha,17-dimethyl-5alpha-androstan-3-one
  • 17a-Methyl-drostanolone
  • Methasterone (1.0mg/ml in Acetonitrile)
  • 2,17-Dimethyldihydrotestosterone
  • NIOSH/BV8047800
  • Methasterone Solution in Acetonitrile, 100ug/mL
  • 17beta-Hydroxy-2alpha,17alpha-dimethyl-5alpha-androstan-3-one
  • 2 Alpha, 17 alpha, dimethyl etiocholan-3-one 17 beta-ol
  • 2-alpha,17-alpha-Dimethyl-17-beta-hydroxy-5-alpha-androstan-3-one
  • 5-alpha-Androstan-3-one, 2-alpha,17-alpha-dimethyl-17-beta-hydroxy-

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
318.50 g/molcalc.
Exact mass
318.2559 Dacalc.
LogP (octanol/water)
4.6calc.
Topological polar surface area
37.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
23calc.
Rings
4calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.95calc.
Formal charge
0calc.
Stereocentres
8calc.
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=C1CCC2C(CCC3C4CCCC4CCC23)C1

O=C1CCC2C(CCC3C4CCCC4CCC23)C1

4 rings, 18 atoms.

338 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H351Suspected of causing cancer.
  • H360FDMay damage fertility. May damage the unborn child.
Precautionary statements (5)
  • P203Obtain, read and follow all safety instructions before use.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P318If exposed or concerned, get medical advice.
  • 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

Methasterone suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 2 suppliers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

2 suppliers in 2 countries

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Methasterone price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

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 Methasterone 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 Methasterone is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Methasterone?

17beta-Hydroxy-2alpha,17-dimethyl-5alpha-androstan-3-one is a 3-oxo-5alpha-steroid.

What is the CAS number of Methasterone?

The CAS registry number of Methasterone is 3381-88-2. Other or deprecated CAS numbers: 88979-44-6.

What is the molecular formula and weight of Methasterone?

The molecular formula of Methasterone is C21H34O2 and its molar mass is 318.50 g/mol.

Is Methasterone hazardous?

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

What is the HS code of Methasterone?

Methasterone 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 Methasterone?

CompoundList lists 2 suppliers of Methasterone in Spain and Italy. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Methasterone?

Suppliers quote Methasterone 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 Methasterone

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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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