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Hormones and steroids

Oxymetholone

Also known as Anasteron, Protanabol, Anapolon

CAS 434-07-1Formula C21H32O3Molar mass 332.48 g/molEC 207-098-6
GHS signal word: Warning. Pictograms: Serious health hazard Controlled, licensed buyers only
Request as a licensed buyer Safety data
Oxymetholone chemical structure, C21H32O3, CAS 434-07-1
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Crystals from ethyl acetate
Melting point
185 to 190
Solubility
Practically insol in water, sol in ethanol, dioxane, ether, very sol in chloroform
HS code
293729
Category
Hormones and steroids

What is Oxymetholone?

Plain description, key identifiers and synonyms

Oxymetholone is a 3-oxo-5alpha- steroid that is 4,5alpha-dihydrotestosterone which is substituted by a hydroxymethylidene group at position 2 and by a methyl group at the 17alpha position. A synthetic androgen, it was mainly used for the treatment of anaemias until being replaced by treatments with fewer side effects. It has a role as an anabolic agent, an androgen and an anti-anaemic agent. It is a 3-oxo-5alpha-steroid, a tertiary alcohol, an enol, a 17beta-hydroxy steroid, an anabolic androgenic steroid and an enone.

Oxymetholone is an androgen and anabolic steroid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2Z,5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-2-(hydroxymethylidene)-10,13,17-trimethyl-1,4,5,6,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one
CAS number
434-07-1 CAS number cross-checked
EC number
207-098-6
Molecular formula
C21H32O3
UNII
L76T0ZCA8K
MDL number
MFCD00869395
InChIKey
ICMWWNHDUZJFDW-DHODBPELSA-N
InChI
InChI=1S/C21H32O3/c1-19-11-13(12-22)18(23)10-14(19)4-5-15-16(19)6-8-20(2)17(15)7-9-21(20,3)24/h12,14-17,22,24H,4-11H2,1-3H3/b13-12-/t14-,15+,16-,17-,19-,20-,21-/m0/s1
Canonical SMILES
CC12CC(=CO)C(=O)CC1CCC1C2CCC2(C)C1CCC2(C)O
Isomeric SMILES
C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@]2(C)O)CC[C@@H]4[C@@]3(C/C(=C/O)/C(=O)C4)C

Synonyms

  • Anasteron
  • Protanabol
  • Anapolon
  • Nastenon
  • Adroyd
  • Anadrol
  • Anadrol-50
  • Oxymethenolone
  • Oximetolona
  • Plenastril
  • Synasteron
  • Roboral
  • Oxymethalone
  • Adroidin
  • Becorel
  • Dynasten
  • Pardroyd
  • Pavisoid
  • Zenalosyn
  • Oximetholonum
  • Oxymetholonum
  • Anadroyd
  • Anasteronal
  • Methabol
  • Oximetalonu
Show all 39 synonyms
  • Oxitosona-50
  • Ossimetolone
  • Oxymetholone ciii
  • 17-Hydroxy-5-alpha-androstan-3-one
  • CI 406
  • 2-Hydroxymethylene-17alpha-methyldihydrotestosterone
  • 4,5alpha-Dihydro-2-hydroxymethylene-17alpha-methyltestosterone
  • 2-Hydroxymethylene-17alpha-methyl-5alpha-androstan-17beta-ol-3-one
  • 17alpha-Methyl-2-hydroxymethylene-17-hydroxy-5alpha-androstan-3-one
  • 17-Hydroxy-2-(hydroxymethylene)-17-methyl-5-alpha-17-beta-androst-3-one
  • 2-Hydroxymethylene-17alpha-methyl-17beta-hydroxy-5alpha-androstan-3-one
  • 2-Hydroxymethylene-17-alpha-methyl-dihydrotestosterone
  • 2-Hydroxymethylene-17alpha-methylandrostan-17beta-ol-3-one
  • 4,5-Dihydro-2-hydroxymethylene-17-alpha-methyltestosterone

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
Crystals from ethyl acetateexp.
Odour
ODORLESSexp.
Melting point
185 to 190exp.
Solubility
Practically insol in water, sol in ethanol, dioxane, ether, very sol in chloroformexp.

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
332.48 g/molcalc.
Exact mass
332.2351 Dacalc.
LogP (octanol/water)
4.4calc.
Topological polar surface area
57.53 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
0calc.
Heavy atoms
24calc.
Rings
4calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.86calc.
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, C=C1CC2C(CCC3C4CCCC4CCC23)CC1=O

C=C1CC2C(CCC3C4CCCC4CCC23)CC1=O

4 rings, 19 atoms.

10 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

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

Hazard statements

  • H351Suspected of causing cancer.
  • H361Suspected of damaging fertility or 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

Oxymetholone suppliers

Controlled substance, listings of documented suppliers only, in the documented ranking

Prescription medicine ingredient

Oxymetholone is controlled. Only documented suppliers can list it, and buyers must upload a valid licence with their request. Every request is reviewed before suppliers see it.

Licensed buyers only, every enquiry is reviewed by our compliance team.

Reference: Anabolic steroid

Our policy on controlled substances
No documented supplier lists it yet

Licensed buyers can post a request for Oxymetholone with their licence. Our compliance team reviews it before suppliers see it.

Request as a licensed buyer

Oxymetholone price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Veterinary medication:.

Use classes: Pharmaceuticals.

Pharmacological actions

  • Anabolic Agents
  • Androgens

Roles

  • agonist
  • anabolic agent
  • androgen
  • anti-anaemic agent
  • hormone
  • molecular messenger
  • sex hormone

Functional uses

  • Pharmaceutical

Pharmacology

Oxymetholone is an orally active synthetic anabolic steroid and a 17alpha-methylated derivative of dihydrotestosterone, with androgenic activity. Although oxymetholone has low affinity for binding the androgen receptor (AR), it strongly activates AR-mediated signaling, which stimulates both protein synthesis and erythropoietin production. This agent may stimulate muscle growth, induce hemoglobin production and red blood cell formation, and promote increased bone density.

How it is made

17alpha-methylandrostan-17beta-ol-3-one in anhydrous thiophene-free benzene is reacted with ethyl formate & sodium hydride by stirring mixture under nitrogen ... several hr. Resulting sodium derivative is washed & ... treated with cold dilute HCl to liberate crude oxymetholone ... purified by recrystallization ...

Preparation: ... Ringold, Rosenkranz, DE 1070632 (1959 to Syntex)

Regulatory status

Inventories, regulations and trade controls that list this substance

Prescription medicine ingredient

Oxymetholone is controlled. Only documented suppliers can list it, and buyers must upload a valid licence with their request. Every request is reviewed before suppliers see it.

Licensed buyers only, every enquiry is reviewed by our compliance team.

Reference: Anabolic steroid

Our policy on controlled substances

Controls

  • US DEA controlled substance or listed chemical

Health and food

  • Prescription medicine active ingredient

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Oxymetholone 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 Oxymetholone is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Oxymetholone?

Oxymetholone is a 3-oxo-5alpha- steroid that is 4,5alpha-dihydrotestosterone which is substituted by a hydroxymethylidene group at position 2 and by a methyl group at the 17alpha position. A synthetic androgen, it was mainly used for the treatment of anaemias until being replaced by treatments with fewer side effects.

What is the CAS number of Oxymetholone?

The CAS registry number of Oxymetholone is 434-07-1.

What is the molecular formula and weight of Oxymetholone?

The molecular formula of Oxymetholone is C21H32O3 and its molar mass is 332.48 g/mol.

What is Oxymetholone used for?

Veterinary medication:. Use classes: Pharmaceuticals.

Is Oxymetholone hazardous?

Oxymetholone carries the GHS signal word "Warning". Main hazards: suspected of causing cancer, suspected of damaging fertility or the unborn child. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Oxymetholone?

Oxymetholone 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.

Can I buy Oxymetholone on CompoundList?

Oxymetholone is a controlled substance. Only documented suppliers can list it, and buyers must upload a valid licence with their request. Every request is reviewed by our compliance team before suppliers see it.

Guides for buyers

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

Request as a licensed buyer

Upload your licence with the request. Our compliance team reviews it before the documented suppliers see it.
Request as a licensed buyer
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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