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Steroids and sterols

Calusterone

Also known as Methosarb, Calusterona, Calusteronum

CAS 17021-26-0Formula C21H32O2Molar mass 316.49 g/molEC 111-724-2
GHS signal word: Danger. Pictograms: Serious health hazard 1 supplier listed
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Calusterone chemical structure, C21H32O2, CAS 17021-26-0
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Crystals from acetone
Melting point
127 to 129
Solubility
INSOL IN WATER, FREELY SOL IN ALCOHOL
HS code
293729
Category
Steroids and sterols
Illustrative photo, closed white HDPE bottles and amber jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Calusterone?

Plain description, key identifiers and synonyms

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

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(7S,8R,9S,10R,13S,14S,17S)-17-hydroxy-7,10,13,17-tetramethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-one
CAS number
17021-26-0 CAS number cross-checked
EC number
111-724-2
Molecular formula
C21H32O2
UNII
0678G6Q58A
InChIKey
IVFYLRMMHVYGJH-PVPPCFLZSA-N
InChI
InChI=1S/C21H32O2/c1-13-11-14-12-15(22)5-8-19(14,2)16-6-9-20(3)17(18(13)16)7-10-21(20,4)23/h12-13,16-18,23H,5-11H2,1-4H3/t13-,16-,17-,18+,19-,20-,21-/m0/s1
Canonical SMILES
CC1CC2=CC(=O)CCC2(C)C2CCC3(C)C(CCC3(C)O)C12
Isomeric SMILES
C[C@H]1CC2=CC(=O)CC[C@@]2([C@@H]3[C@@H]1[C@@H]4CC[C@]([C@]4(CC3)C)(C)O)C

Synonyms

  • Methosarb
  • Calusterona
  • Calusteronum
  • 7beta,17alpha-Dimethyltestosterone
  • 7-beta,17-Dimethyltestosterone
  • 7beta,17-Dimethyltestosterone
  • 7-beta,17-alpha-Dimethyl testosterone
  • 17beta-Hydroxy-7beta,17-dimethylandrost-4-en-3-one
  • 17-beta-Hydroxy-7-beta,17-alpha-dimethylandrost-4-ene-3-one
  • 17beta-Hydroxy-7beta,17alpha-dimethylandrost-4-ene-3-one
  • Androst-4-en-3-one, 17beta-hydroxy-7beta,17-dimethyl-
  • Androst-4-en-3-one, 17-hydroxy-7,17-dimethyl-, (7beta,17beta)-
  • 7-beta-17-alpha-dimethyltestosterone
  • (1S,2R,9S,10R,11S,14S,15S)-14-hydroxy-2,9,14,15-tetramethyltetracyclo(8.7.0.0^(2,7).0^(11,15))heptadec-6-en-5-one
  • (1S,2R,9S,10R,11S,14S,15S)-14-hydroxy-2,9,14,15-tetramethyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadec-6-en-5-one
  • 7beta, 17alpha-Dimethyltestosterone
  • 7 beta,17 alpha-dimethyltestosterone
  • 7 Beta, 17 Alpha-dimethyltestosterone
  • 17-Beta-hydroxy-7-beta, 17-dimethylandrost-4-ene-3-one
  • 17 Beta-OH-7 beta, 17 alpha-dimethyl-androst-4-ene-3-one
  • Androst-4-en-3-one, 7beta, 17alpha-dimethyl-17beta-hydroxy-
  • Androst-4-en-3-one, 17-hydroxy-7,17-dimethyl-, (7beta, 17beta)-
  • Dimethyltestosterone
  • (7S,8R,9S,10R,13S,14S,17S)-17-hydroxy-7,10,13,17-tetramethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-one
  • Calusteron
Show all 32 synonyms
  • 17-beta-hydroxy-7-beta-17-dimethyl androst-4-en-3-one
  • CLS
  • Calusterone (1.0mg/ml in Acetonitrile)
  • Androst-4-en-3-one,17-dimethyl-
  • Calusterone degrees
  • Androst-4-en-3-one, 17-beta-hydroxy-7-beta,17-dimethyl-
  • Androst-4-en-3-one, 7beta,17alpha-dimethyl-17beta-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

Appearance
Crystals from acetoneexp.
Odour
ODORLESSexp.
Taste
TASTELESSexp.
Melting point
127 to 129exp.
Solubility
INSOL IN WATER, FREELY SOL IN ALCOHOLexp.

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
316.49 g/molcalc.
Exact mass
316.2402 Dacalc.
LogP (octanol/water)
4.52calc.
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
0.86calc.
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, 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
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

Calusterone suppliers

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Where suppliers are based

1 supplier in 1 country

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Calusterone 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

Antineoplastic (Former).

Roles

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

Functional uses

  • Pharmaceutical

Pharmacology

Calusterone is a 17-alkylated orally active androgenic steroid. Calusterone may alter the metabolism of estradiol and reduce estrogen production. (NCI04)

How it is made

Preparation: Campbell, Babcock, US 3029263, US 3341557 (1962, 1967 both to Upjohn)

Reported to be by reduction of 6-dehydro-7,17alpha-dimethyltestosterone.

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

Frequently asked questions

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

What is Calusterone?

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

What is the CAS number of Calusterone?

The CAS registry number of Calusterone is 17021-26-0.

What is the molecular formula and weight of Calusterone?

The molecular formula of Calusterone is C21H32O2 and its molar mass is 316.49 g/mol.

What is Calusterone used for?

Antineoplastic (Former).

Is Calusterone hazardous?

Calusterone 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 Calusterone?

Calusterone 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 Calusterone?

CompoundList lists 1 supplier of Calusterone 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 Calusterone?

Suppliers quote Calusterone 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 Calusterone

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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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