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Impurities and reference standards

Levonorgestrel acetate

Also known as Levonorgestrel 17-acetate, Norgestimate impurity a, (17.Alpha.)-17-(acetyloxy)-13-ethyl-18,19-dinorpregn-4-en-20-yn-3-one

CAS 13732-69-9Formula C23H30O3Molar mass 354.49 g/molEC 604-013-8
GHS signal word: Danger. Pictograms: Harmful or irritant, Serious health hazard, Hazardous to the environment 1 supplier listed
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Levonorgestrel acetate chemical structure, C23H30O3, CAS 13732-69-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
13732-69-9
Formula
C23H30O3
Molar mass
354.49 g/mol
EC number
604-013-8
HS code
291539
Category
Impurities and reference standards

What is Levonorgestrel acetate?

Plain description, key identifiers and synonyms

Levonorgestrel acetate is a chemical substance with the molecular formula C23H30O3 and a molar mass of 354.49 g/mol. Its CAS registry number is 13732-69-9. The IUPAC name is [(8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-3-oxo-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-yl] acetate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
[(8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-3-oxo-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-yl] acetate
CAS number
13732-69-9Other or deprecated CAS: 18290-31-8
EC number
604-013-8
Molecular formula
C23H30O3
UNII
VF642934XZ
InChIKey
YDQDJLTYVZAOQX-GOMYTPFNSA-N
InChI
InChI=1S/C23H30O3/c1-4-22-12-10-19-18-9-7-17(25)14-16(18)6-8-20(19)21(22)11-13-23(22,5-2)26-15(3)24/h2,14,18-21H,4,6-13H2,1,3H3/t18-,19+,20+,21-,22-,23-/m0/s1
Canonical SMILES
C#CC1(OC(C)=O)CCC2C3CCC4=CC(=O)CCC4C3CCC21CC
Isomeric SMILES
CC[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@]2(C#C)OC(=O)C)CCC4=CC(=O)CC[C@H]34

Synonyms

  • Levonorgestrel 17-acetate
  • Norgestimate impurity a
  • (17.Alpha.)-17-(acetyloxy)-13-ethyl-18,19-dinorpregn-4-en-20-yn-3-one
  • 13beta-ethyl-3-oxo-18,19-dinor-17alpha-pregn-4-en-20-yn-17-yl acetate
  • 18,19-Dinorpregn-4-en-20-yn-3-one, 17-(acetyloxy)-13-ethyl-, (17.alpha.)-
  • Norgestimate impurity a (ep impurity)
  • (17Alpha)-17-(acetyloxy)-13-ethyl-18,19-dinorpregn-4-en-20-yn-3-one
  • 18,19-Dinorpregn-4-en-20-yn-3-one, 17-(acetyloxy)-13-ethyl-, (17alpha)-
  • D-(-)-Norgestrel 17-Acetate
  • Norgestimate EP Impurity A
  • [(8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-3-oxo-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-yl] acetate
  • Norgestrel acetate
  • 3-Ketonorgestimate
  • 13beta-Ethyl-3-oxo-18,19-dinor-17alpha-pregn-4-en-20-yn-17-yl Acetate (Levonorgestrel Acetate)
  • 17beta-acetoxy-13beta-ethyl-17alpha-ethynyl-gon-4-en-3-one
  • 18,19-Dinorpregn-4-en-20-yn-3-one, 17-(acetyloxy)-13-ethyl-, (17alpha)-(+-)-
  • Norgestimate EP Impurity A (Norgestimate USP Related Compound A) (Mixture of Enantiomers)
  • (1R,3aS,3bR,9aR,9bS,11aS)-11a-Ethyl-1-ethynyl-7-oxo-2,3,3a,3b,4,5,7,8,9,9a,9b,10,11,11a-tetradecahydro-1H-cyclopenta[a]phenanthren-1-yl acetate
  • (8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate

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
354.49 g/molcalc.
Exact mass
354.2195 Dacalc.
LogP (octanol/water)
4.45calc.
Topological polar surface area
43.37 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
2calc.
Heavy atoms
26calc.
Rings
4calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.74calc.
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

GHS signal word
Danger
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H317May cause an allergic skin reaction.
  • H332Harmful if inhaled.
  • H351Suspected of causing cancer.
  • H360May damage fertility or the unborn child.
  • H362May cause harm to breast-fed children.
  • H372Causes damage to organs through prolonged or repeated exposure.
  • H401Toxic to aquatic life.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (24)
  • P203Obtain, read and follow all safety instructions before use.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P263Avoid contact during pregnancy and while nursing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P317Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P391Collect spillage.
  • 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

Levonorgestrel acetate suppliers

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Levonorgestrel acetate 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 Levonorgestrel acetate is traded under.

HS 2915.39Indicative HS code

Esters of acetic acid, other

World exports in 2024
$2.03B
+7.9% vs 2023, imports $1.95B
2019 to 2024
Top exporters
  1. China58.0%
  2. United States7.3%
  3. Germany6.5%
Top importers
  1. Singapore15.6%
  2. South Korea7.2%
  3. Indonesia6.9%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Levonorgestrel acetate, based on the data on this page

What is Levonorgestrel acetate?

Levonorgestrel acetate is a chemical substance with the molecular formula C23H30O3 and a molar mass of 354.49 g/mol. Its CAS registry number is 13732-69-9. The IUPAC name is [(8R,9S,10R,13S,14S,17R)-13-ethyl-17-ethynyl-3-oxo-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-yl] acetate.

What is the CAS number of Levonorgestrel acetate?

The CAS registry number of Levonorgestrel acetate is 13732-69-9. Other or deprecated CAS numbers: 18290-31-8.

What is the molecular formula and weight of Levonorgestrel acetate?

The molecular formula of Levonorgestrel acetate is C23H30O3 and its molar mass is 354.49 g/mol.

Is Levonorgestrel acetate hazardous?

Levonorgestrel acetate carries the GHS signal word "Danger". Main hazards: harmful if swallowed, causes skin irritation, may cause an allergic skin reaction. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Levonorgestrel acetate?

Levonorgestrel acetate is usually classified under HS code 291539 (Esters of acetic acid, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Levonorgestrel acetate?

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

What is the price of Levonorgestrel acetate?

Suppliers quote Levonorgestrel acetate 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 Levonorgestrel acetate

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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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