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Hormones and steroids

Zeranol

Also known as Zearalanol, alpha-Zearalanol, Ralabol

CAS 26538-44-3Formula C18H26O5Molar mass 322.40 g/molEC 247-769-0
GHS signal word: Danger. Pictograms: Harmful or irritant, Serious health hazard 37 suppliers listed Drug substance
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Zeranol chemical structure, C18H26O5, CAS 26538-44-3
2D chemical structure

Key facts

What buyers check first

All properties
Physical form
Powder
Melting point
177.8 to 180
Solubility
Less than 1 mg/mL at 68 °F
HS code
293220
Category
Hormones and steroids
Illustrative photo, assorted laboratory chemical bottles and jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Zeranol?

Plain description, key identifiers and synonyms

Alpha-Zearalanol is a macrolide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(4S,8R)-8,16,18-trihydroxy-4-methyl-3-oxabicyclo[12.4.0]octadeca-1(14),15,17-trien-2-one
CAS number
26538-44-3 CAS number cross-checked
EC number
247-769-0
Molecular formula
C18H26O5
UNII
76LO2L2V39
MDL number
MFCD00864182
InChIKey
DWTTZBARDOXEAM-GXTWGEPZSA-N
InChI
InChI=1S/C18H26O5/c1-12-6-5-9-14(19)8-4-2-3-7-13-10-15(20)11-16(21)17(13)18(22)23-12/h10-12,14,19-21H,2-9H2,1H3/t12-,14+/m0/s1
Canonical SMILES
CC1CCCC(O)CCCCCc2cc(O)cc(O)c2C(=O)O1
Isomeric SMILES
C[C@H]1CCC[C@@H](CCCCCC2=C(C(=CC(=C2)O)O)C(=O)O1)O

Synonyms

  • Zearalanol
  • alpha-Zearalanol
  • Ralabol
  • Zearanol
  • alpha-Zeranol
  • Ralgro
  • Zeranolum
  • Frideron
  • THFES (HM)
  • MK 188
  • Xeranol
  • 1H-2-Benzoxacyclotetradecin-1-one, 3,4,5,6,7,8,9,10,11,12-decahydro-7,14,16-trihydroxy-3-methyl-, (3S,7R)-
  • 1H-2-Benzoxacyclotetradecin-1-one, 3,4,5,6,7,8,9,10,11,12-decahydro-7,14,16-trihydroxy-3-methyl-, (3S-(3R*,7S*))-
  • 6-(6,10-Dihydroxyundecyl)-beta-resorcylic acid, mu-lactone
  • (4S,8R)-8,16,18-trihydroxy-4-methyl-3-oxabicyclo[12.4.0]octadeca-1(14),15,17-trien-2-one
  • (7R,11S)-7,15,17-trihydroxy-11-methyl-12-oxabicyclo[12.4.0]octadeca-1(14),15,17-trien-13-one
  • (4S,8R)-8,16,18-trihydroxy-4-methyl-3-oxabicyclo(12.4.0)octadeca-1(14),15,17-trien-2-one
  • (7R,11S)-7,15,17-trihydroxy-11-methyl-12-oxabicyclo(12.4.0)octadeca-1(14),15,17-trien-13-one
  • Ralgro L. A.
  • (-)-alpha-ZEARALANOL
  • a-Zeranol
  • (3S,7R)-7,14,16-trihydroxy-3-methyl-3,4,5,6,7,8,9,10,11,12-decahydro-1H-2-benzoxacyclotetradecin-1-one
  • alpha zearalanol
  • Ralabol (TN)
  • Zeranol, 2,4-Dihydroxy-6-(6|A,10-dihydroxyundecyl)benzoic acid |I-lactone
Show all 31 synonyms
  • 1H-2-Benzoxacyclotetradecin-1-one,3,4,5,6,7,8,9,10,11,12-decahydro-7,14,16-trihydroxy-3-methyl-,(3S,7R)-
  • Zeranol (USAN/INN)
  • Alpha-Zeranol (1.0mg/ml in Acetonitrile)
  • (3S,7X)-3,4,5,6,7,8,9,10,11,12-Decahydro-7,14,16-trihydroxy-3-methyl-1H-2-benzoxacyclotetradecin-1-one
  • 4mg8
  • (6X,10S)-6-(6,10-Dihydroxyundecyl)-beta-resorcylic acid mu-lactone

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

Physical form
Powderexp.
Melting point
177.8 to 180exp.
Solubility
Less than 1 mg/mL at 68 °Fexp.

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
322.40 g/molcalc.
Exact mass
322.178 Dacalc.
LogP (octanol/water)
3.29calc.
Topological polar surface area
86.99 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
0calc.
Heavy atoms
23calc.
Rings
2calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.61calc.
Formal charge
0calc.
Stereocentres
2calc.
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=C1OCCCCCCCCCCc2ccccc21

O=C1OCCCCCCCCCCc2ccccc21

2 rings, 19 atoms.

7 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

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
  • H351Suspected of causing cancer.
  • H360May damage fertility or the unborn child.
  • H372Causes damage to organs through prolonged or repeated exposure.
Precautionary statements (20)
  • 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.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • 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.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • 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

Zeranol suppliers

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

All 37 suppliers
30 of 30 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

37 suppliers in 13 countries

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Zeranol 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

Use classes: Animal Drugs.

Pharmacological actions

  • Estrogens, Non-Steroidal

Functional uses

  • Pharmaceutical

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • Active ingredient in FDA approved drug labels

United States

  • TSCA inventory (USA)
    Status: Inactive in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Zeranol is traded under.

HS 2932.20Indicative HS code

Lactones

World exports in 2024
$1.97B
−4.7% vs 2023, imports $2.07B
2019 to 2024
Top exporters
  1. China56.3%
  2. India * partner reported7.4%
  3. Germany7.3%
Top importers
  1. United States14.2%
  2. India * partner reported13.5%
  3. Brazil8.5%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Zeranol?

Alpha-Zearalanol is a macrolide.

What is the CAS number of Zeranol?

The CAS registry number of Zeranol is 26538-44-3.

What is the molecular formula and weight of Zeranol?

The molecular formula of Zeranol is C18H26O5 and its molar mass is 322.40 g/mol.

What is Zeranol used for?

Use classes: Animal Drugs.

Is Zeranol hazardous?

Zeranol carries the GHS signal word "Danger". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Zeranol?

Zeranol is usually classified under HS code 293220 (Lactones). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Zeranol?

CompoundList lists 37 suppliers of Zeranol in United States, China, Germany, Australia and 9 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Zeranol in India?

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

What is the price of Zeranol?

Suppliers quote Zeranol 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 Zeranol

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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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