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Synthetic aroma chemicals

alpha-IONOL

Also known as (E)-4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-ol, alpha-lonol, latilure

CAS 25312-34-9Formula C13H22OMolar mass 194.32 g/molEC 207-455-6
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alpha-IONOL chemical structure, C13H22O, CAS 25312-34-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
25312-34-9
Formula
C13H22O
Molar mass
194.32 g/mol
EC number
207-455-6
HS code
290619
Category
Synthetic aroma chemicals

What is alpha-IONOL?

Plain description, key identifiers and synonyms

4,7-Megastigmadien-9-ol is a sesquiterpenoid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(E)-4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-ol
CAS number
25312-34-9Other or deprecated CAS: 472-78-6
EC numbers
207-455-6, 246-815-7
Molecular formula
C13H22O
UNII
4QI2W5Y52K
MDL number
MFCD00036594
INCI name
ALPHA-IONOL
InChIKey
PWDOJWCZWKWKSE-BQYQJAHWSA-N
InChI
InChI=1S/C13H22O/c1-10-6-5-9-13(3,4)12(10)8-7-11(2)14/h6-8,11-12,14H,5,9H2,1-4H3/b8-7+
Canonical SMILES
CC1=CCCC(C)(C)C1C=CC(C)O
Isomeric SMILES
CC1=CCCC(C1/C=C/C(C)O)(C)C

Synonyms

  • (E)-4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-ol
  • alpha-lonol
  • latilure
  • Ionol, alpha-
  • 4-(2,6,6-Trimethyl-2-cyclohexenyl)-3-buten-2-ol
  • 4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-2-ol
  • 3-Buten-2-ol, 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-, (3E)-
  • 3-Buten-2-ol, 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-
  • (3E)-4-(2,6,6-Trimethyl-2-cyclohexenyl)-3-buten-2-ol
  • (+-)-ALPHA-IONOL
  • 4,7-Megastigmadien-9-ol
  • (3E)-4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-ol
  • a-Ionol (Technical Grade)
  • Alpha-Ionol (Technical Grade)
  • inverted exclamation mark-Ionol
  • (+/-)-alpha-IONOL
  • alpha-IONOL, (+/-)-
  • alpha-Ionol, technical, >=90% (GC)
  • (E)-4-(2,6,6-trimethylcyclohex-2-enyl)but-3-en-2-ol
  • (3E)-4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-2-ol
  • 4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-2-ol, 9CI
  • 4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-trans-3-buten-2-ol
  • 4-(2,6,6-Trimethyl-2-cyclohexenyl)-3-buten-2-ol, (3E)-
  • (3E)-4-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-3-buten-2-ol #
  • 3-Buten-2-ol,4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-

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
194.32 g/molcalc.
Exact mass
194.1671 Dacalc.
LogP (octanol/water)
3.31calc.
Topological polar surface area
20.23 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
2calc.
Heavy atoms
14calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.69calc.
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, C1=CCCCC1

C1=CCCCC1

1 ring, 6 atoms, the Cyclohexene ring system.

5,167 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.

alpha-IONOL suppliers

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alpha-IONOL 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

Cosmetic ingredient, INCI name ALPHA-IONOL(perfuming)

Functional uses

  • Antioxidant
  • Flavouring and nutrient
  • Fragrance

Cosmetic functions

  • Perfuming

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

United States

  • TSCA inventory (USA)
    Status: Active 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 alpha-IONOL is traded under.

HS 2906.19Indicative HS code

Cyclanic, cyclenic or cycloterpenic, other

World exports in 2024
$613M
+18.7% vs 2023, imports $606M
2019 to 2024
Top exporters
  1. China34.2%
  2. India * partner reported10.1%
  3. Germany9.5%
Top importers
  1. United States19.8%
  2. Germany9.0%
  3. India * partner reported8.4%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about alpha-IONOL, based on the data on this page

What is alpha-IONOL?

4,7-Megastigmadien-9-ol is a sesquiterpenoid.

What is the CAS number of alpha-IONOL?

The CAS registry number of alpha-IONOL is 25312-34-9. Other or deprecated CAS numbers: 472-78-6.

What is the molecular formula and weight of alpha-IONOL?

The molecular formula of alpha-IONOL is C13H22O and its molar mass is 194.32 g/mol.

What is alpha-IONOL used for?

Known uses and roles of alpha-IONOL include fragrance ingredients in cosmetics and personal care, fragrance ingredients in flavors and fragrances, perfuming, antioxidant, flavouring and nutrient and 1 more.

Is alpha-IONOL hazardous?

No GHS hazard classification for alpha-IONOL 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 alpha-IONOL?

alpha-IONOL is usually classified under HS code 290619 (Cyclanic, cyclenic or cycloterpenic, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy alpha-IONOL?

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

What is the price of alpha-IONOL?

Suppliers quote alpha-IONOL 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 alpha-IONOL

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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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