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Aliphatic and alicyclic building blocks

alpha-Licanic acid

Also known as 9,11,13-Octadecatrienoic acid, 4-oxo-, (E,Z,E)-, (9Z,11E,13E)-4-Oxo-9,11,13-octadecatrienoic acid, 4-oxo-9Z,11E,13E-octadecatrienoic acid

CAS 623-99-4Formula C18H28O3Molar mass 292.42 g/molEC 210-824-4
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alpha-Licanic acid chemical structure, C18H28O3, CAS 623-99-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
623-99-4
Formula
C18H28O3
Molar mass
292.42 g/mol
EC number
210-824-4
HS code
291830
Category
Aliphatic and alicyclic building blocks

What is alpha-Licanic acid?

Plain description, key identifiers and synonyms

Alpha-licanic acid is a trienoic fatty acid comprising alpha-eleostearic acid having a 4-oxo substituent. It is a long-chain fatty acid, a 4-oxo monocarboxylic acid, a straight-chain fatty acid, an oxo fatty acid and a trienoic fatty acid. It is functionally related to a (9Z,11E,13E)-octadeca-9,11,13-trienoic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(9Z,11E,13E)-4-oxooctadeca-9,11,13-trienoic acid
CAS number
623-99-4Other or deprecated CAS: 17699-20-6
EC number
210-824-4
Molecular formula
C18H28O3
UNII
C97AF73WH4
InChIKey
DTRGDWOPRCXRET-WPOADVJFSA-N
InChI
InChI=1S/C18H28O3/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-17(19)15-16-18(20)21/h5-10H,2-4,11-16H2,1H3,(H,20,21)/b6-5+,8-7+,10-9-
Canonical SMILES
CCCCC=CC=CC=CCCCCC(=O)CCC(=O)O
Isomeric SMILES
CCCC/C=C/C=C/C=C\CCCCC(=O)CCC(=O)O

Synonyms

  • 9,11,13-Octadecatrienoic acid, 4-oxo-, (E,Z,E)-
  • (9Z,11E,13E)-4-Oxo-9,11,13-octadecatrienoic acid
  • 4-oxo-9Z,11E,13E-octadecatrienoic acid
  • 9,11,13-Octadecatrienoic acid, 4-oxo-, (9Z,11E,13E)-
  • a-Licansaeure
  • alpha-Licanate
  • beta-Licanate
  • Couepinic acid
  • Coupenic acid
  • a-Licanate
  • b-Licanate
  • a-Licanic acid
  • b-Licanic acid
  • 4-oxo-9,11,13-Octadecatrienoate
  • 4-oxo-Octadeca-9C,11t,13t-trienoate
  • (Z,e,e)-4-Oxooctadeca-9,11,13-trienoate
  • 4-oxo-cis9,trans11,trans13-Octadecatrienoate
  • 4-oxo-cis-9,trans-11,trans-13-Octadecatrienoate
  • (9Z,11E,13E)-4-Oxooctadeca-9,11,13-trienoate
  • couepic acid
  • (9Z,11E,13E)-4-Oxooctadeca-9,11,13-trienoic acid
  • 4-Oxo-9,11,13-octadecatrienoic acid
  • 4-Oxo-cis-9,trans-11,trans-13-octadecatrienoic acid
  • alpha-Licansaeure
  • 4-Oxo-9c,11t,13t-octadecatriensaeure
Show all 30 synonyms
  • 4-Oxo-octadeca-9c,11t,13t-triensaeure
  • 4-oxo-octadeca-9c,11t,13t-trienoic acid
  • (Z,E,E)-4-oxooctadeca-9,11,13-trienoic acid
  • 4-Oxo-cis9,trans11,trans13-octadecatrienoic acid
  • (9Z,11E,13E)-4-Oxooctadeca-9,11,13-trienoic acid, Couepic acid, Couepinic acid, Coupenic acid

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
292.42 g/molcalc.
Exact mass
292.2038 Dacalc.
LogP (octanol/water)
4.84calc.
Topological polar surface area
54.37 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
13calc.
Heavy atoms
21calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.56calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

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-Licanic acid suppliers

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alpha-Licanic acid 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

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 alpha-Licanic acid is traded under.

HS 2918.30Indicative HS code

Carboxylic acids with aldehyde or ketone function but without other oxygen function…

World exports in 2024
$813M
−39.8% vs 2023, imports $1.23B
2019 to 2024
Top exporters
  1. China43.3%
  2. India * partner reported10.4%
  3. United States6.8%
Top importers
  1. Singapore33.1%
  2. Germany7.2%
  3. Japan6.9%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is alpha-Licanic acid?

Alpha-licanic acid is a trienoic fatty acid comprising alpha-eleostearic acid having a 4-oxo substituent. It is a long-chain fatty acid, a 4-oxo monocarboxylic acid, a straight-chain fatty acid, an oxo fatty acid and a trienoic fatty acid. It is functionally related to a (9Z,11E,13E)-octadeca-9,11,13-trienoic acid.

What is the CAS number of alpha-Licanic acid?

The CAS registry number of alpha-Licanic acid is 623-99-4. Other or deprecated CAS numbers: 17699-20-6.

What is the molecular formula and weight of alpha-Licanic acid?

The molecular formula of alpha-Licanic acid is C18H28O3 and its molar mass is 292.42 g/mol.

What is alpha-Licanic acid used for?

Known uses and roles of alpha-Licanic acid include building blocks in research and laboratory.

Is alpha-Licanic acid hazardous?

No GHS hazard classification for alpha-Licanic acid 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-Licanic acid?

alpha-Licanic acid is usually classified under HS code 291830 (Carboxylic acids with aldehyde or ketone function but without other oxygen function…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy alpha-Licanic acid?

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

What is the price of alpha-Licanic acid?

Suppliers quote alpha-Licanic acid 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-Licanic acid

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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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