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Impurities and reference standards

Equilin

Also known as 7-Dehydroestrone, Dihydroequilenin, 3-Hydroxyestra-1,3,5(10),7-tetraen-17-one

CAS 474-86-2Formula C18H20O2Molar mass 268.36 g/molEC 207-488-6
GHS signal word: Danger. Pictograms: Harmful or irritant, Serious health hazard 5 suppliers listed
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Equilin chemical structure, C18H20O2, CAS 474-86-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
474-86-2
Formula
C18H20O2
Molar mass
268.36 g/mol
EC number
207-488-6
HS code
291450
Category
Impurities and reference standards

What is Equilin?

Plain description, key identifiers and synonyms

Equilin is a 17-oxo steroid and a 3-hydroxy steroid. It derives from a hydride of an estrane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(9S,13S,14S)-3-hydroxy-13-methyl-9,11,12,14,15,16-hexahydro-6H-cyclopenta[a]phenanthren-17-one
CAS number
474-86-2 CAS number cross-checked
EC number
207-488-6
Molecular formula
C18H20O2
UNII
08O86EX0J4
InChIKey
WKRLQDKEXYKHJB-HFTRVMKXSA-N
InChI
InChI=1S/C18H20O2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h3-5,10,14,16,19H,2,6-9H2,1H3/t14-,16+,18+/m1/s1
Canonical SMILES
CC12CCC3C(=CCc4cc(O)ccc43)C1CCC2=O
Isomeric SMILES
C[C@]12CC[C@H]3C(=CCC4=C3C=CC(=C4)O)[C@@H]1CCC2=O

Synonyms

  • 7-Dehydroestrone
  • Dihydroequilenin
  • 3-Hydroxyestra-1,3,5(10),7-tetraen-17-one
  • 1,3,5,7-Estratetraen-3-ol-17-one
  • Estra-1,3,5(10),7-tetraen-17-one, 3-hydroxy-
  • Equilin (USP)
  • (1S,11S,15S)-5-hydroxy-15-methyltetracyclo(8.7.0.02,7.011,15)heptadeca-2(7),3,5,9-tetraen-14-one
  • (9S,13S,14S)-3-hydroxy-13-methyl-9,11,12,14,15,16-hexahydro-6H-cyclopenta[a]phenanthren-17-one
  • 3-hydroxy-estra-1,3,5(10),7tetraen-17-one
  • Equilin CRS
  • Equilin, 1,3,5,7-Estratetraen-3-ol-17-one, 3-Hydroxyestra-1,3,5(10),7-tetraen-17-one, 7-Dehydroestrone, NSC 10971, Estrogens conjugated Impurity J
  • Equilin (Standard)
  • 3-Hydroxyoestra-1,3,5(10),7-tetraen-17-one
  • 4-08-00-01366 (Beilstein Handbook Reference)
  • Conjugated Estrogens EP Impurity J
  • 1,5,7-Estratetraen-3-ol-17-one
  • Equilin Solution in Acetonitrile, 100ug/mL
  • Equilin, VETRANAL(TM), analytical standard
  • 3-Hydroxyestra-1,5(10),7-tetraen-17-one
  • Equilin Solution in Acetonitrile, 1000ug/mL
  • 3-hydroxy-estra-1,3,5(10), 7-tetraen-17-one
  • 3-hydroxy-estra-1,3,5(10),7-tetraen-17-one
  • Estra-1,5(10),7-tetraen-17-one, 3-hydroxy-
  • Equilin, European Pharmacopoeia (EP) Reference Standard
  • Equilin, United States Pharmacopeia (USP) Reference Standard
Show all 28 synonyms
  • (11aS,6bS,8aS)-4-hydroxy-8a-methyl-2,7,8,10,11,11a,6b,8a-octahydrocyclopenta[1 ,2-a]phenanthren-9-one
  • (9S,13S,14S)-3-hydroxy-13-methyl-9,11,12,13,15,16-hexahydro-6H-cyclopenta[a]phenanthren-17(14H)-one
  • Equilin, 7-Dehydroestrone, 3-Hydroxy-1,3,5(10),7-estratetraen-17-one, 1,3,5(10),7-Estratetraen-3-ol-17-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
268.36 g/molcalc.
Exact mass
268.1463 Dacalc.
LogP (octanol/water)
3.74calc.
Topological polar surface area
37.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
20calc.
Rings
4calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.5calc.
Formal charge
0calc.
Stereocentres
3calc.
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=C1CCC2C3=CCc4ccccc4C3CCC12

O=C1CCC2C3=CCc4ccccc4C3CCC12

4 rings, 18 atoms.

13 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.
  • H312Harmful in contact with skin.
  • H332Harmful if inhaled.
  • H351Suspected of causing cancer.
  • H360May damage fertility or the unborn child.
  • H361Suspected of damaging fertility or the unborn child.
  • H362May cause harm to breast-fed children.
Precautionary statements (18)
  • 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.
  • 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.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • 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

Equilin suppliers

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

All 5 suppliers
5 of 5 offers
  • Bayer de Mexico, S.A. de C.V.
    Mexico, Ixtaczoquitlan Veracruz ManufacturerUnclaimed profile
    EquilinGrade, purity and minimum order on request
    Price on request
    View
  • Chemicea
    India ManufacturerUnclaimed profile
    EquilinGrade, purity and minimum order on request
    Price on request
    View
  • AChemBlock
    United States, HaywardUnclaimed profile
    EquilinGrade, purity and minimum order on request
    Price on request
    View
  • TimTec
    United States, KissimmeeUnclaimed profile
    EquilinGrade, purity and minimum order on request
    Price on request
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  • Veeprho
    Czech Republic, Czech RepublicUnclaimed profile
    EquilinGrade, purity and minimum order on request
    Price on request
    View

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

5 suppliers in 4 countries

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Equilin price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Pharmacology

Equilin is a naturally occurring steroid with estrogenic activity obtained from the urine of pregnant mares.

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 Equilin is traded under.

HS 2914.50Indicative HS code

Ketone-phenols and ketones with other oxygen function

World exports in 2024
$438M
+10.9% vs 2023, imports $420M
2019 to 2024
Top exporters
  1. China50.5%
  2. India * partner reported11.6%
  3. United States11.3%
Top importers
  1. United States20.8%
  2. Germany10.0%
  3. Netherlands8.6%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Equilin?

Equilin is a 17-oxo steroid and a 3-hydroxy steroid. It derives from a hydride of an estrane.

What is the CAS number of Equilin?

The CAS registry number of Equilin is 474-86-2.

What is the molecular formula and weight of Equilin?

The molecular formula of Equilin is C18H20O2 and its molar mass is 268.36 g/mol.

Is Equilin hazardous?

Equilin carries the GHS signal word "Danger". Main hazards: harmful if swallowed, harmful in contact with skin, harmful if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Equilin?

Equilin is usually classified under HS code 291450 (Ketone-phenols and ketones with other oxygen function). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Equilin?

CompoundList lists 5 suppliers of Equilin in United States, Czech Republic, India and Mexico. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Equilin in India?

1 supplier in India list Equilin on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Equilin?

Suppliers quote Equilin 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 Equilin

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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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