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Steroids and sterols

Loestrin

Also known as Norlestrin, Anovlar 21, Norethindrone acetate and ethinyl estradiol

CAS 8015-12-1Formula C42H52O5Molar mass 636.87 g/mol
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Loestrin chemical structure, C42H52O5, CAS 8015-12-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
8015-12-1
Formula
C42H52O5
Molar mass
636.87 g/mol
HS code
293723
Category
Steroids and sterols

What is Loestrin?

Plain description, key identifiers and synonyms

Loestrin is a pharmaceutical combination.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(8R,9S,13S,14S,17R)-17-ethynyl-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diol, [(8R,9S,10R,13S,14S,17R)-17-ethynyl-13-methyl-3-oxo-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-yl] acetate
CAS number
8015-12-1 CAS number cross-checked
Molecular formula
C42H52O5
InChIKey
GEONECATAKDDLT-JDSZYESASA-N
InChI
InChI=1S/C22H28O3.C20H24O2/c1-4-22(25-14(2)23)12-10-20-19-7-5-15-13-16(24)6-8-17(15)18(19)9-11-21(20,22)3;1-3-20(22)11-9-18-17-6-4-13-12-14(21)5-7-15(13)16(17)8-10-19(18,20)2/h1,13,17-20H,5-12H2,2-3H3;1,5,7,12,16-18,21-22H,4,6,8-11H2,2H3/t17-,18+,19+,20-,21-,22-;16-,17-,18+,19+,20+/m01/s1
Canonical SMILES
C#CC1(O)CCC2C3CCc4cc(O)ccc4C3CCC21C.C#CC1(OC(C)=O)CCC2C3CCC4=CC(=O)CCC4C3CCC21C
Isomeric SMILES
CC(=O)O[C@]1(CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CCC4=CC(=O)CC[C@H]34)C)C#C.C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@]2(C#C)O)CCC4=C3C=CC(=C4)O

Synonyms

  • Norlestrin
  • Anovlar 21
  • Norethindrone acetate and ethinyl estradiol
  • Controvlar
  • Microgestin
  • Trentovlane
  • Cumorit
  • Estrostep
  • Etalontin
  • Gynonlar
  • Loveston
  • Neorlest
  • Primodos
  • Sinovula
  • Taytulla
  • Gyn-Anovlar
  • Lo Loestrin
  • Lo Loestrin Fe
  • Gynonlar 21
  • Minastrin 24 Fe
  • Loestrin 24 Fe
  • Tri-legest 21
  • Microgestin 1/20
  • Aurovela 1.5/30
  • Econ 30
Show all 38 synonyms
  • Hailey Fe 1/20
  • Microgestin 1.5/30
  • Junel 1/20
  • Estrostep 21
  • Junel 1.5/30
  • Loestrin fe 1/20
  • Loestrin 21 1/20
  • Norlestrin 21 1/50
  • Norlestrin 28 1/50
  • Loestrin 21 1.5/30
  • Norlestrin 21 2.5/50
  • Ethinylestradiol and norethindrone acetate
  • Norethindrone acetate and ethinylestradiol

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
636.87 g/molcalc.
Exact mass
636.3815 Dacalc.
LogP (octanol/water)
7.68calc.
Topological polar surface area
83.83 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
1calc.
Heavy atoms
47calc.
Rings
8calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.67calc.
Formal charge
0calc.
Stereocentres
11calc.
Components
2calc.
Lipinski rule of five
Fails (2 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.

Loestrin suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

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

Frequently asked questions

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

What is Loestrin?

Loestrin is a pharmaceutical combination.

What is the CAS number of Loestrin?

The CAS registry number of Loestrin is 8015-12-1.

What is the molecular formula and weight of Loestrin?

The molecular formula of Loestrin is C42H52O5 and its molar mass is 636.87 g/mol.

Is Loestrin hazardous?

No GHS hazard classification for Loestrin 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 Loestrin?

Loestrin 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 Loestrin?

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

What is the price of Loestrin?

Suppliers quote Loestrin 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 Loestrin

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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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