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Impurities and reference standards

6beta-Hydroxynorethindrone

Also known as 6beta-hydroxynorethisterone, Norethisterone impurity H, (6beta,17alpha)-6,17-Dihydroxy-19-norpregn-4-en-20-yn-3-one

CAS 51724-44-8Formula C20H26O3Molar mass 314.43 g/molEC 641-823-0
GHS signal word: Danger. Pictograms: Harmful or irritant, Serious health hazard
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6beta-Hydroxynorethindrone chemical structure, C20H26O3, CAS 51724-44-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
51724-44-8
Formula
C20H26O3
Molar mass
314.43 g/mol
EC number
641-823-0
HS code
293723
Category
Impurities and reference standards

What is 6beta-Hydroxynorethindrone?

Plain description, key identifiers and synonyms

6beta-Hydroxynorethindrone is a chemical substance with the molecular formula C20H26O3 and a molar mass of 314.43 g/mol. Its CAS registry number is 51724-44-8. The IUPAC name is (6R,8R,9S,10R,13S,14S,17R)-17-ethynyl-6,17-dihydroxy-13-methyl-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
(6R,8R,9S,10R,13S,14S,17R)-17-ethynyl-6,17-dihydroxy-13-methyl-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one
CAS number
51724-44-8 CAS number cross-checked
EC number
641-823-0
Molecular formula
C20H26O3
UNII
SSA95YG2AY
MDL number
MFCD01310749
InChIKey
RONQVEAZNZIVHW-BHJGDWCPSA-N
InChI
InChI=1S/C20H26O3/c1-3-20(23)9-7-17-15-11-18(22)16-10-12(21)4-5-13(16)14(15)6-8-19(17,20)2/h1,10,13-15,17-18,22-23H,4-9,11H2,2H3/t13-,14-,15-,17+,18-,19+,20+/m1/s1
Canonical SMILES
C#CC1(O)CCC2C3CC(O)C4=CC(=O)CCC4C3CCC21C
Isomeric SMILES
C[C@]12CC[C@@H]3[C@H]4CCC(=O)C=C4[C@@H](C[C@H]3[C@@H]1CC[C@]2(C#C)O)O

Synonyms

  • 6beta-hydroxynorethisterone
  • Norethisterone impurity H
  • (6beta,17alpha)-6,17-Dihydroxy-19-norpregn-4-en-20-yn-3-one
  • 6beta,17-Dihydroxy-19-nor-17alpha-pregn-4-en-20-yn-3-one
  • 19-Norpregn-4-en-20-yn-3-one, 6,17-dihydroxy-, (6beta,17alpha)-
  • (6beta,17.alpha.)-6,17-dihydroxy-19-norpregn-4-en-20-yn-3-one
  • 19-Norpregn-4-en-20-yn-3-one, 6,17-dihydroxy-, (6beta,17.alpha.)-
  • Norethisterone impurity h (ep impurity)
  • 6b-Hydroxy Norethindrone
  • 6beta-Hydroxy Norethindrone
  • (6R,8R,9S,10R,13S,14S,17R)-17-ethynyl-6,17-dihydroxy-13-methyl-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one
  • Norethisterone EP Impurity H
  • Norethindrone EP Impurity H
  • 6beta,17-Dihydroxy-19-nor-17alpha-pregn-4-en-20-yn-3-one (6beta-Hydroxynorethisterone)
  • 6beta,17-Dihydroxy-19-nor-17alpha-pregn-4-en-20-yn-3-one, Norethisterone Imp. H (EP), 6beta-Hydroxynorethisterone, Norethisterone Impurity H
  • 6beta,17-Dihydroxy-17alpha-19-norpregn-4-en-20-yn-3-one
  • (6R,8R,9S,10R,13S,14S,17R)-17-ethynyl-6,17-dihydroxy-13-methyl-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3(2H)-one

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
314.43 g/molcalc.
Exact mass
314.1882 Dacalc.
LogP (octanol/water)
2.46calc.
Topological polar surface area
57.53 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
0calc.
Heavy atoms
23calc.
Rings
4calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.75calc.
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
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H302Harmful if swallowed.
  • H334May cause allergy or asthma symptoms or breathing difficulties if inhaled.
Precautionary statements (12)
  • P233Keep container tightly closed.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P284In case of inadequate ventilation wear respiratory protection.
  • P301 + P317If swallowed: Get medical help.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P330Rinse mouth.
  • P342 + P316If experiencing respiratory symptoms: Get emergency medical help immediately.
  • P403Store in a well-ventilated place.
  • 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

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6beta-Hydroxynorethindrone price

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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 6beta-Hydroxynorethindrone 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 6beta-Hydroxynorethindrone is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 6beta-Hydroxynorethindrone, based on the data on this page

What is 6beta-Hydroxynorethindrone?

6beta-Hydroxynorethindrone is a chemical substance with the molecular formula C20H26O3 and a molar mass of 314.43 g/mol. Its CAS registry number is 51724-44-8. The IUPAC name is (6R,8R,9S,10R,13S,14S,17R)-17-ethynyl-6,17-dihydroxy-13-methyl-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one.

What is the CAS number of 6beta-Hydroxynorethindrone?

The CAS registry number of 6beta-Hydroxynorethindrone is 51724-44-8.

What is the molecular formula and weight of 6beta-Hydroxynorethindrone?

The molecular formula of 6beta-Hydroxynorethindrone is C20H26O3 and its molar mass is 314.43 g/mol.

Is 6beta-Hydroxynorethindrone hazardous?

6beta-Hydroxynorethindrone carries the GHS signal word "Danger". Main hazards: harmful if swallowed, may cause allergy or asthma symptoms or breathing difficulties if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 6beta-Hydroxynorethindrone?

6beta-Hydroxynorethindrone 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 6beta-Hydroxynorethindrone?

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What is the price of 6beta-Hydroxynorethindrone?

Suppliers quote 6beta-Hydroxynorethindrone on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

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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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