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Steroids and sterols

Clostebol

Also known as 4-Chlorotestosterone, Clostebolum, 4-Chloro-17beta-hydroxyandrost-4-en-3-one

CAS 1093-58-9Formula C19H27ClO2Molar mass 322.88 g/molEC 214-133-9
GHS signal word: Warning. Pictograms: Serious health hazard 1 supplier listed
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Clostebol chemical structure, C19H27ClO2, CAS 1093-58-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1093-58-9
Formula
C19H27ClO2
Molar mass
322.88 g/mol
EC number
214-133-9
HS code
293729
Category
Steroids and sterols

What is Clostebol?

Plain description, key identifiers and synonyms

Clostebol is a 3-hydroxy steroid. It has a role as an androgen.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(8R,9S,10R,13S,14S,17S)-4-chloro-17-hydroxy-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one
CAS number
1093-58-9 CAS number cross-checked
EC number
214-133-9
Molecular formula
C19H27ClO2
UNII
Z7D4G976SH
InChIKey
KCZCIYZKSLLNNH-FBPKJDBXSA-N
InChI
InChI=1S/C19H27ClO2/c1-18-10-8-15(21)17(20)14(18)4-3-11-12-5-6-16(22)19(12,2)9-7-13(11)18/h11-13,16,22H,3-10H2,1-2H3/t11-,12-,13-,16-,18+,19-/m0/s1
Canonical SMILES
CC12CCC(=O)C(Cl)=C1CCC1C2CCC2(C)C(O)CCC12
Isomeric SMILES
C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@@H]2O)CCC4=C(C(=O)CC[C@]34C)Cl

Synonyms

  • 4-Chlorotestosterone
  • Clostebolum
  • 4-Chloro-17beta-hydroxyandrost-4-en-3-one
  • 4-chloro-delta-4-androstene-3alpha-ol-17-one
  • Clostebol (INN)
  • (8R,9S,10R,13S,14S,17S)-4-chloro-17-hydroxy-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one
  • Clostebol (1.0mg/ml in Acetonitrile)
  • 4-Chlor-testosteron
  • Androst-4-en-3-one, 4-chloro-17-hydroxy-, (17beta)-
  • Clostebol (1 mg/ml in Acetonitrile)
  • Clostebol Solution in Methanol, 100ug/mL
  • Clostebol Solution in Methanol, 1000ug/mL

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
322.88 g/molcalc.
Exact mass
322.17 Dacalc.
LogP (octanol/water)
4.45calc.
Topological polar surface area
37.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
22calc.
Rings
4calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.84calc.
Formal charge
0calc.
Stereocentres
6calc.
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
Warning
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H351Suspected of causing cancer.
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

Clostebol suppliers

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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

1 supplier in 1 country

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Clostebol 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

Roles

  • agonist
  • androgen
  • hormone
  • molecular messenger
  • sex hormone

Functional uses

  • Pharmaceutical

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 Clostebol 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 Clostebol is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Clostebol?

Clostebol is a 3-hydroxy steroid. It has a role as an androgen.

What is the CAS number of Clostebol?

The CAS registry number of Clostebol is 1093-58-9.

What is the molecular formula and weight of Clostebol?

The molecular formula of Clostebol is C19H27ClO2 and its molar mass is 322.88 g/mol.

What is Clostebol used for?

Known uses and roles of Clostebol include hormones and steroids in pharmaceuticals, agonist, androgen, hormone, molecular messenger and 2 more.

Is Clostebol hazardous?

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

What is the HS code of Clostebol?

Clostebol 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 Clostebol?

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

What is the price of Clostebol?

Suppliers quote Clostebol 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 Clostebol

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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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