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Aromatic building blocks

Dienestrol

Also known as Dienoestrol, Dehydrostilbestrol, Cycladiene

CAS 84-17-3Formula C18H18O2Molar mass 266.34 g/molEC 201-519-7
GHS signal word: Danger. Pictograms: Serious health hazard 5 suppliers listed
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Dienestrol chemical structure, C18H18O2, CAS 84-17-3
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Minute needles from dilute alc
Melting point
227 to 228
Solubility
FREELY SOL IN ALC, METHANOL, ETHER, ACETONE, PROPYLENE GLYCOL, SOL IN CHLOROFORM, AQ SOL…
HS code
290729
Category
Aromatic building blocks
Illustrative photo, closed blue fibre drums on a pallet in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Dienestrol?

Plain description, key identifiers and synonyms

Dienestrol is an olefinic compound that is hexa-2,4-diene substituted by 4-hydroxyphenyl groups at positions 3 and 4 respectively. It has a role as a xenoestrogen. It is a member of phenols and an olefinic compound.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-[(2E,4E)-4-(4-hydroxyphenyl)hexa-2,4-dien-3-yl]phenol
CAS number
84-17-3 CAS number cross-checkedOther or deprecated CAS: 13029-44-2
EC number
201-519-7
Molecular formula
C18H18O2
UNII
RRW32X4U1F
MDL number
MFCD00050983
InChIKey
NFDFQCUYFHCNBW-SCGPFSFSSA-N
InChI
InChI=1S/C18H18O2/c1-3-17(13-5-9-15(19)10-6-13)18(4-2)14-7-11-16(20)12-8-14/h3-12,19-20H,1-2H3/b17-3+,18-4+
Canonical SMILES
CC=C(C(=CC)c1ccc(O)cc1)c1ccc(O)cc1
Isomeric SMILES
C/C=C(/C(=C/C)/C1=CC=C(C=C1)O)\C2=CC=C(C=C2)O

Synonyms

  • Dienoestrol
  • Dehydrostilbestrol
  • Cycladiene
  • Dienol
  • Estraguard
  • Follidiene
  • Oestrasid
  • Oestrodiene
  • Estroral
  • Restrol
  • Estragard
  • Estrodienol
  • Gynefollin
  • Oestroral
  • Dinovex
  • Retalon
  • Hormofemin
  • Dehydrostilboestrol
  • Oestrodienol
  • Willnestrol
  • Agaldog
  • Follormon
  • Oestrovis
  • Sexadien
  • Teserene
Show all 39 synonyms
  • para-Dien
  • Dienestrolum
  • Dienestrolo
  • 4-[(2E,4E)-4-(4-hydroxyphenyl)hexa-2,4-dien-3-yl]phenol
  • 3,4-Bis(4-hydroxyphenyl)-2,4-hexadiene
  • p,p'-(Diethylideneethylene)diphenol
  • Dienoestrolum
  • Di(p-oxyphenyl)-2,4-hexadiene
  • 4,4'-(Diethylideneethylene)diphenol
  • Di(para-oxyphenyl)-2,4-hexadiene
  • 4,4'-Hydroxy-gamma,delta-diphenyl-beta,delta-hexadiene
  • para,para'-(Diethylideneethylene)diphenol
  • Phenol, 4,4'-(diethylideneethylene)di-
  • 4,4'-(1,2-Diethylidene-1,2-ethanediyl)bisphenol

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

Appearance
Minute needles from dilute alcexp.
Odour
Odorlessexp.
Melting point
227 to 228exp.
Solubility
FREELY SOL IN ALC, METHANOL, ETHER, ACETONE, PROPYLENE GLYCOL, SOL IN CHLOROFORM, AQ SOLN OF ALKALI HYDROXIDES, SOLUBLE IN VEGETABLE OILS AFTER WARMING, BUT CRYSTALLIZES OUT ON STANDING, PRACTICALLY INSOL IN WATER, DIL ACIDS.exp.

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
266.34 g/molcalc.
Exact mass
266.1307 Dacalc.
LogP (octanol/water)
4.6calc.
Topological polar surface area
40.46 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
3calc.
Heavy atoms
20calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.11calc.
Formal charge
0calc.
Stereocentres
0calc.
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, C=C(C(=C)c1ccccc1)c1ccccc1

C=C(C(=C)c1ccccc1)c1ccccc1

2 rings, 16 atoms, the 2,3-Diphenylbuta-1,3-diene ring system.

22 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H350May cause cancer.
  • H361Suspected of damaging fertility or the unborn child.
Precautionary statements (5)
  • P203Obtain, read and follow all safety instructions before use.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P318If exposed or concerned, get medical advice.
  • 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

Dienestrol suppliers

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

All 5 suppliers
5 of 5 offers

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 3 countries

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Dienestrol 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

Veterinary medication:.

Pharmacological actions

  • Estrogens, Non-Steroidal

Roles

  • agonist
  • endocrine disruptor
  • estrogen
  • hormone
  • hormone receptor modulator
  • molecular messenger
  • pharmaceutical
  • receptor modulator
  • sex hormone
  • xenoestrogen

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 Dienestrol is traded under.

HS 2907.29Indicative HS code

Polyphenols, phenol-alcohols, other

World exports in 2024
$535M
−27.0% vs 2023, imports $565M
2019 to 2024
Top exporters
  1. India * partner reported17.7%
  2. Germany16.5%
  3. Japan15.8%
Top importers
  1. United States13.1%
  2. Japan8.0%
  3. Belgium7.9%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Dienestrol?

Dienestrol is an olefinic compound that is hexa-2,4-diene substituted by 4-hydroxyphenyl groups at positions 3 and 4 respectively. It has a role as a xenoestrogen. It is a member of phenols and an olefinic compound.

What is the CAS number of Dienestrol?

The CAS registry number of Dienestrol is 84-17-3. Other or deprecated CAS numbers: 13029-44-2.

What is the molecular formula and weight of Dienestrol?

The molecular formula of Dienestrol is C18H18O2 and its molar mass is 266.34 g/mol.

What is Dienestrol used for?

Veterinary medication:.

Is Dienestrol hazardous?

Dienestrol carries the GHS signal word "Danger". Main hazards: may cause cancer, suspected of damaging fertility or the unborn child. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Dienestrol?

Dienestrol is usually classified under HS code 290729 (Polyphenols, phenol-alcohols, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dienestrol?

CompoundList lists 5 suppliers of Dienestrol in China, United States and Netherlands. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Dienestrol?

Suppliers quote Dienestrol 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 Dienestrol

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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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