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Steroids and sterols

Norbolethone, (-)-

Also known as Norboletone, (-)-, Norbolethone L-form, 18,19-Dinor-17alpha-pregn-4-en-3-one, 13-ethyl-17-hydroxy-, (-)-

CAS 797-59-1Formula C21H32O2Molar mass 316.49 g/mol
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Norbolethone, (-)- chemical structure, C21H32O2, CAS 797-59-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
797-59-1
Formula
C21H32O2
Molar mass
316.49 g/mol
HS code
291440
Category
Steroids and sterols

What is Norbolethone, (-)-?

Plain description, key identifiers and synonyms

Norbolethone, (-)- is a chemical substance with the molecular formula C21H32O2 and a molar mass of 316.49 g/mol. Its CAS registry number is 797-59-1. The IUPAC name is (8S,9R,10S,13R,14R,17R)-13,17-diethyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(8S,9R,10S,13R,14R,17R)-13,17-diethyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one
CAS number
797-59-1
Molecular formula
C21H32O2
UNII
1981B5HEE8
InChIKey
FTBJKONNNSKOLX-XHCJJCCMSA-N
InChI
InChI=1S/C21H32O2/c1-3-20-11-9-17-16-8-6-15(22)13-14(16)5-7-18(17)19(20)10-12-21(20,23)4-2/h13,16-19,23H,3-12H2,1-2H3/t16-,17+,18+,19-,20-,21-/m1/s1
Canonical SMILES
CCC1(O)CCC2C3CCC4=CC(=O)CCC4C3CCC21CC
Isomeric SMILES
CC[C@@]12CC[C@@H]3[C@@H]([C@H]1CC[C@@]2(CC)O)CCC4=CC(=O)CC[C@@H]34

Synonyms

  • Norboletone, (-)-
  • Norbolethone L-form
  • 18,19-Dinor-17alpha-pregn-4-en-3-one, 13-ethyl-17-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

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
316.49 g/molcalc.
Exact mass
316.2402 Dacalc.
LogP (octanol/water)
4.66calc.
Topological polar surface area
37.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
2calc.
Heavy atoms
23calc.
Rings
4calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.86calc.
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

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.

Norbolethone, (-)- suppliers

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Norbolethone, (-)- 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 Norbolethone, (-)- is traded under.

HS 2914.40Indicative HS code

Ketone-alcohols and ketone-aldehydes

World exports in 2024
$199M
+2.5% vs 2023, imports $247M
2019 to 2024
Top exporters
  1. China29.5%
  2. Germany14.4%
  3. Netherlands12.7%
Top importers
  1. United States37.2%
  2. Netherlands8.5%
  3. Germany6.4%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Norbolethone, (-)-, based on the data on this page

What is Norbolethone, (-)-?

Norbolethone, (-)- is a chemical substance with the molecular formula C21H32O2 and a molar mass of 316.49 g/mol. Its CAS registry number is 797-59-1. The IUPAC name is (8S,9R,10S,13R,14R,17R)-13,17-diethyl-17-hydroxy-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one.

What is the CAS number of Norbolethone, (-)-?

The CAS registry number of Norbolethone, (-)- is 797-59-1.

What is the molecular formula and weight of Norbolethone, (-)-?

The molecular formula of Norbolethone, (-)- is C21H32O2 and its molar mass is 316.49 g/mol.

Is Norbolethone, (-)- hazardous?

No GHS hazard classification for Norbolethone, (-)- 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 Norbolethone, (-)-?

Norbolethone, (-)- is usually classified under HS code 291440 (Ketone-alcohols and ketone-aldehydes). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Norbolethone, (-)-?

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What is the price of Norbolethone, (-)-?

Suppliers quote Norbolethone, (-)- 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 Norbolethone, (-)-

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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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