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Steroids and sterols

Algestone

Also known as Alphasone, 16alpha,17-Dihydroxypregn-4-ene-3,20-dione, Algestona

CAS 595-77-7Formula C21H30O4Molar mass 346.47 g/molEC 209-869-2
GHS hazard pictograms. Pictograms: Hazardous to the environment 4 suppliers listed
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Algestone chemical structure, C21H30O4, CAS 595-77-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
595-77-7
Formula
C21H30O4
Molar mass
346.47 g/mol
EC number
209-869-2
HS code
293723
Category
Steroids and sterols

What is Algestone?

Plain description, key identifiers and synonyms

Algestone is a C21-steroid that is pregn-4-ene substituted by oxo groups at position 3 and 20 and hydroxy groups at positions 16 and 17. It has a role as a progestin. It is a tertiary alpha-hydroxy ketone, a 16alpha-hydroxy steroid, a 17-hydroxy steroid, a 20-oxo steroid, a 3-oxo-Delta(4) steroid and a C21-steroid. It derives from a hydride of a pregnane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(8R,9S,10R,13S,14S,16R,17S)-17-acetyl-16,17-dihydroxy-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-one
CAS number
595-77-7 CAS number cross-checked
EC number
209-869-2
Molecular formula
C21H30O4
UNII
3JEB53B3WT
InChIKey
CXDWHYOBSJTRJU-SRWWVFQWSA-N
InChI
InChI=1S/C21H30O4/c1-12(22)21(25)18(24)11-17-15-5-4-13-10-14(23)6-8-19(13,2)16(15)7-9-20(17,21)3/h10,15-18,24-25H,4-9,11H2,1-3H3/t15-,16+,17+,18-,19+,20+,21-/m1/s1
Canonical SMILES
CC(=O)C1(O)C(O)CC2C3CCC4=CC(=O)CCC4(C)C3CCC21C
Isomeric SMILES
CC(=O)[C@]1([C@@H](C[C@@H]2[C@@]1(CC[C@H]3[C@H]2CCC4=CC(=O)CC[C@]34C)C)O)O

Synonyms

  • Alphasone
  • 16alpha,17-Dihydroxypregn-4-ene-3,20-dione
  • Algestona
  • Algestonum
  • Pregn-4-ene-3,20-dione, 16,17-dihydroxy-, (16alpha)-
  • 16Alpha,17-dihydroxyprogesterone
  • (16alpha)-16,17-dihydroxypregn-4-ene-3,20-dione
  • 16 alpha,17-Dihydroxypregn-4-ene-3,20-dione
  • 4-Pregnene-16alpha,17alpha-diol-3,20-dione
  • Dihydroxyprogesterone
  • (8R,9S,10R,13S,14S,16R,17S)-17-acetyl-16,17-dihydroxy-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-one
  • Alfasone, Alphasone
  • 16alpha,17-Dihydroxy-4-pregnen-3,20-dion
  • 16alpha,17alpha-dihydroxyprogesterone
  • 16a,17-Dihydroxyprogesterone
  • 4-Pregnen-16a,17a-diol-3,20-dione
  • (16a)-16,17-Dihydroxy-pregn-4-ene-3,20-dione
  • Alphasone, 16 alpha,17 alpha-dihydroxyprogesterone
  • (16.Alpha.)-16,17-dihydroxypregn-4-ene-3,20-dione

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
346.47 g/molcalc.
Exact mass
346.2144 Dacalc.
LogP (octanol/water)
2.81calc.
Topological polar surface area
74.6 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
1calc.
Heavy atoms
25calc.
Rings
4calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.81calc.
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 classification
Hazard pictograms
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (3)
  • P273Avoid release to the environment.
  • P391Collect spillage.
  • 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

Algestone suppliers

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

All 4 suppliers
4 of 4 offers

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

4 suppliers in 2 countries

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Algestone 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

Pharmacological actions

  • Contraceptives, Oral, Hormonal
  • Contraceptives, Oral, Synthetic
  • Progestins

Roles

  • agonist
  • hormone
  • molecular messenger
  • progestin
  • progestogen
  • sex hormone

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 Algestone is traded under.

HS 2937.23Indicative HS code

Oestrogens and progestogens

World exports in 2024
$762M
−2.3% vs 2023, imports $693M
2019 to 2024
Top exporters
  1. China42.9%
  2. Italy18.4%
  3. Netherlands8.9%
Top importers
  1. India * partner reported12.1%
  2. United States11.0%
  3. Belgium8.3%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Algestone is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Algestone?

Algestone is a C21-steroid that is pregn-4-ene substituted by oxo groups at position 3 and 20 and hydroxy groups at positions 16 and 17. It has a role as a progestin. It is a tertiary alpha-hydroxy ketone, a 16alpha-hydroxy steroid, a 17-hydroxy steroid, a 20-oxo steroid, a 3-oxo-Delta(4) steroid and a C21-steroid.

What is the CAS number of Algestone?

The CAS registry number of Algestone is 595-77-7.

What is the molecular formula and weight of Algestone?

The molecular formula of Algestone is C21H30O4 and its molar mass is 346.47 g/mol.

What is Algestone used for?

Known uses and roles of Algestone include agonist, hormone, molecular messenger, progestin, progestogen and 4 more.

Is Algestone hazardous?

Algestone has a GHS hazard classification. Main hazards: toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Algestone?

Algestone is usually classified under HS code 293723 (Oestrogens and progestogens). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Algestone?

CompoundList lists 4 suppliers of Algestone in India and Netherlands. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Algestone in India?

2 suppliers in India list Algestone on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Algestone?

Suppliers quote Algestone 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 Algestone

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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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