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Lipids and fatty acids

Isooleic acid

Also known as trans-10-octadecenoic acid, (10E)-10-Octadecenoic acid, (E)-10-Octadecenoic acid

CAS 5684-82-2Formula C18H34O2Molar mass 282.47 g/mol
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Isooleic acid chemical structure, C18H34O2, CAS 5684-82-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
5684-82-2
Formula
C18H34O2
Molar mass
282.47 g/mol
HS code
291615
Category
Lipids and fatty acids

What is Isooleic acid?

Plain description, key identifiers and synonyms

(10E)-octadecenoic acid is an octadecenoic acid with a trans-double bond at position C-10. It has a role as a plant metabolite. It is a conjugate acid of a (10E)-octadecenoate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(E)-octadec-10-enoic acid
CAS number
5684-82-2 CAS number cross-checkedOther or deprecated CAS: 3386-63-8
Molecular formula
C18H34O2
UNII
LWW9I5EN2C
InChIKey
QXJSBBXBKPUZAA-CMDGGOBGSA-N
InChI
InChI=1S/C18H34O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h8-9H,2-7,10-17H2,1H3,(H,19,20)/b9-8+
Canonical SMILES
CCCCCCCC=CCCCCCCCCC(=O)O
Isomeric SMILES
CCCCCCC/C=C/CCCCCCCCC(=O)O

Synonyms

  • trans-10-octadecenoic acid
  • (10E)-10-Octadecenoic acid
  • (E)-10-Octadecenoic acid
  • 10-Octadecenoic acid, trans-
  • 10-Octadecenoic acid, (E)-
  • 10-Octadecenoic acid, (10E)-
  • (E)-octadec-10-enoic acid
  • 10E-octadecenoic acid
  • 10-Octadecenoic acid
  • (10E)-octadec-10-enoic acid
  • C18:1n-8
  • (10E)-octadecenoic acid
  • trans-10-octadecenoic acid, C18:1n-8, 10(E)-OME

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
282.47 g/molcalc.
Exact mass
282.2559 Dacalc.
LogP (octanol/water)
6.11calc.
Topological polar surface area
37.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
15calc.
Heavy atoms
20calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.83calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (1 violation)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.

Isooleic acid suppliers

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Isooleic acid 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

Roles

  • eukaryotic metabolite
  • metabolite
  • plant metabolite

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 Isooleic acid is traded under.

HS 2916.15Indicative HS code

Oleic, linoleic or linolenic acids, their salts and esters

World exports in 2024
$204M
−5.6% vs 2023, imports $199M
2019 to 2024
Top exporters
  1. Italy20.3%
  2. China14.4%
  3. India * partner reported8.0%
Top importers
  1. Germany18.4%
  2. France * partner reported8.7%
  3. China5.9%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Isooleic acid, based on the data on this page

What is Isooleic acid?

(10E)-octadecenoic acid is an octadecenoic acid with a trans-double bond at position C-10. It has a role as a plant metabolite. It is a conjugate acid of a (10E)-octadecenoate.

What is the CAS number of Isooleic acid?

The CAS registry number of Isooleic acid is 5684-82-2. Other or deprecated CAS numbers: 3386-63-8.

What is the molecular formula and weight of Isooleic acid?

The molecular formula of Isooleic acid is C18H34O2 and its molar mass is 282.47 g/mol.

What is Isooleic acid used for?

Known uses and roles of Isooleic acid include eukaryotic metabolite, metabolite and plant metabolite.

Is Isooleic acid hazardous?

No GHS hazard classification for Isooleic 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 Isooleic acid?

Isooleic acid is usually classified under HS code 291615 (Oleic, linoleic or linolenic acids, their salts and esters). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Isooleic acid?

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

What is the price of Isooleic acid?

Suppliers quote Isooleic 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 Isooleic 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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