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Steroids and sterols

Pregnane-20-one

Also known as Pregnan-20-one, 1-[(8R,9S,10S,13S,14S,17S)-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]ethanone

CAS 32695-80-0Formula C21H34OMolar mass 302.50 g/mol
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Pregnane-20-one chemical structure, C21H34O, CAS 32695-80-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
32695-80-0
Formula
C21H34O
Molar mass
302.50 g/mol
HS code
291429
Category
Steroids and sterols

What is Pregnane-20-one?

Plain description, key identifiers and synonyms

Pregnan-20-one is a steroid. It derives from a hydride of a pregnane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1-[(8R,9S,10S,13S,14S,17S)-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]ethanone
CAS number
32695-80-0 CAS number cross-checked
Molecular formula
C21H34O
InChIKey
RSRDWHPVTMQUGZ-OZIWPBGVSA-N
InChI
InChI=1S/C21H34O/c1-14(22)17-9-10-18-16-8-7-15-6-4-5-12-20(15,2)19(16)11-13-21(17,18)3/h15-19H,4-13H2,1-3H3/t15?,16-,17+,18-,19-,20-,21+/m0/s1
Canonical SMILES
CC(=O)C1CCC2C3CCC4CCCCC4(C)C3CCC12C
Isomeric SMILES
CC(=O)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CCC4[C@@]3(CCCC4)C)C

Synonyms

  • Pregnan-20-one
  • 1-[(8R,9S,10S,13S,14S,17S)-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]ethanone

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
302.50 g/molcalc.
Exact mass
302.261 Dacalc.
LogP (octanol/water)
5.62calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
1calc.
Heavy atoms
22calc.
Rings
4calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.95calc.
Formal charge
0calc.
Stereocentres
7calc.
Lipinski rule of five
Passes (1 violation)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, C1CCC2C(C1)CCC1C3CCCC3CCC21

C1CCC2C(C1)CCC1C3CCCC3CCC21

4 rings, 17 atoms.

1,694 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Pregnane-20-one suppliers

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Pregnane-20-one price

Indicative price range per kg from live supplier offers

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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

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 Pregnane-20-one is traded under.

HS 2914.29Indicative HS code

Cyclanic, cyclenic or cycloterpenic ketones without other oxygen function, other

World exports in 2024
$1B
+6.6% vs 2023, imports $980M
2019 to 2024
Top exporters
  1. China32.5%
  2. India * partner reported12.9%
  3. Germany12.3%
Top importers
  1. United States15.7%
  2. Japan8.7%
  3. Germany8.7%

* Partner reported figures, a lower bound.

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

The HS code shown for Pregnane-20-one is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Pregnane-20-one, based on the data on this page

What is Pregnane-20-one?

Pregnan-20-one is a steroid. It derives from a hydride of a pregnane.

What is the CAS number of Pregnane-20-one?

The CAS registry number of Pregnane-20-one is 32695-80-0.

What is the molecular formula and weight of Pregnane-20-one?

The molecular formula of Pregnane-20-one is C21H34O and its molar mass is 302.50 g/mol.

Is Pregnane-20-one hazardous?

No GHS hazard classification for Pregnane-20-one is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Pregnane-20-one?

Pregnane-20-one is usually classified under HS code 291429 (Cyclanic, cyclenic or cycloterpenic ketones without other oxygen function, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Pregnane-20-one?

Post a free request on CompoundList and suppliers of Pregnane-20-one will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Pregnane-20-one?

Suppliers quote Pregnane-20-one 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 Pregnane-20-one

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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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