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Steroids and sterols

Pregnane

Also known as 5beta-Pregnane, Pregnane, (5beta)-, 17beta-Ethyletiocholane

CAS 481-26-5Formula C21H36Molar mass 288.52 g/molEC 637-176-9
GHS signal word: Warning. Pictograms: Harmful or irritant 1 supplier listed
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Pregnane chemical structure, C21H36, CAS 481-26-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
481-26-5
Formula
C21H36
Molar mass
288.52 g/mol
EC number
637-176-9
HS code
290219
Category
Steroids and sterols

What is Pregnane?

Plain description, key identifiers and synonyms

5beta-pregnane is a C21-steroid and a pregnane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(5S,8S,9S,10S,13R,14S,17S)-17-ethyl-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene
CAS number
481-26-5 CAS number cross-checkedOther or deprecated CAS: 24909-91-9
EC number
637-176-9
Molecular formula
C21H36
UNII
10Z78HHV4C
InChIKey
JWMFYGXQPXQEEM-NUNROCCHSA-N
InChI
InChI=1S/C21H36/c1-4-15-9-11-18-17-10-8-16-7-5-6-13-20(16,2)19(17)12-14-21(15,18)3/h15-19H,4-14H2,1-3H3/t15-,16-,17-,18-,19-,20-,21+/m0/s1
Canonical SMILES
CCC1CCC2C3CCC4CCCCC4(C)C3CCC12C
Isomeric SMILES
CC[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CC[C@H]4[C@@]3(CCCC4)C)C

Synonyms

  • 5beta-Pregnane
  • Pregnane, (5beta)-
  • 17beta-Ethyletiocholane
  • (8S,9S,10S,13R,14S,17S)-17-ethyl-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene
  • (8S,9S,10S,13R,14S,17S)-17-ethyl-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta(a)phenanthrene
  • Pregnane, (5b)-
  • (5S,8S,9S,10S,13R,14S,17S)-17-ethyl-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene
  • 5B(H)-Pregnane

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
288.52 g/molcalc.
Exact mass
288.2817 Dacalc.
LogP (octanol/water)
6.45calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
1calc.
Heavy atoms
21calc.
Rings
4calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
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

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • 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

Pregnane 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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Pregnane 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

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 is traded under.

HS 2902.19Indicative HS code

Cyclanes, cyclenes and cycloterpenes, other

World exports in 2024
$979M
+24.3% vs 2023, imports $1B
2019 to 2024
Top exporters
  1. China23.4%
  2. United States20.6%
  3. Germany13.6%
Top importers
  1. India * partner reported9.9%
  2. United States9.8%
  3. South Korea9.5%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Pregnane?

5beta-pregnane is a C21-steroid and a pregnane.

What is the CAS number of Pregnane?

The CAS registry number of Pregnane is 481-26-5. Other or deprecated CAS numbers: 24909-91-9.

What is the molecular formula and weight of Pregnane?

The molecular formula of Pregnane is C21H36 and its molar mass is 288.52 g/mol.

Is Pregnane hazardous?

Pregnane carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Pregnane?

Pregnane is usually classified under HS code 290219 (Cyclanes, cyclenes and cycloterpenes, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Pregnane?

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

What is the price of Pregnane?

Suppliers quote Pregnane 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

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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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