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Aliphatic and alicyclic building blocks

Palmitoleic acid

Also known as (Z)-Hexadec-9-enoic acid, cis-9-Hexadecenoic acid, 9-cis-Hexadecenoic acid

CAS 373-49-9Formula C16H30O2Molar mass 254.41 g/molEC 206-765-9
GHS signal word: Warning. Pictograms: Harmful or irritant 30 suppliers listed
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Palmitoleic acid chemical structure, C16H30O2, CAS 373-49-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
373-49-9
Formula
C16H30O2
Molar mass
254.41 g/mol
EC number
206-765-9
HS code
291619
Category
Aliphatic and alicyclic building blocks

What is Palmitoleic acid?

Plain description, key identifiers and synonyms

Palmitoleic acid is a hexadec-9-enoic acid in which the double bond at position C-9 has cis configuration. It has a role as an Escherichia coli metabolite, an EC 3.1.1.1 (carboxylesterase) inhibitor, a Daphnia galeata metabolite, an algal metabolite and a human blood serum metabolite. It is a conjugate acid of a palmitoleate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(Z)-hexadec-9-enoic acid
CAS number
373-49-9 CAS number cross-checked
EC number
206-765-9
Molecular formula
C16H30O2
UNII
209B6YPZ4I
MDL number
MFCD00004437
InChIKey
SECPZKHBENQXJG-FPLPWBNLSA-N
InChI
InChI=1S/C16H30O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16(17)18/h7-8H,2-6,9-15H2,1H3,(H,17,18)/b8-7-
Canonical SMILES
CCCCCCC=CCCCCCCCC(=O)O
Isomeric SMILES
CCCCCC/C=C\CCCCCCCC(=O)O

Synonyms

  • (Z)-Hexadec-9-enoic acid
  • cis-9-Hexadecenoic acid
  • 9-cis-Hexadecenoic acid
  • (9Z)-hexadec-9-enoic acid
  • zoomaric acid
  • cis-Palmitoleic acid
  • Oleopalmitic acid
  • cis-9-palmitoleic acid
  • Zoomeric acid
  • (9Z)-Hexadecenoic acid
  • 9Z-hexadecenoic acid
  • C16:1 trans-9
  • Fatty Acid 16:1 n-7
  • C16:1n7
  • (Z)-9-hexadecenoic acid
  • Hexadecenoate
  • Oleopalmitate
  • Zoomerate
  • cis-Delta(9)-hexadecenoic acid
  • cis-Palmitoleate
  • 9-Hexadecenoate
  • (Z)-Hexadec-9-enoicacid
  • 9-cis-hexadecenoate
  • 9Z-palmitoleic acid
  • cis-delta-9-Hexadecenoic acid
Show all 38 synonyms
  • (Z)-9-hexadecenoate
  • (Z)-Palmitoleic acid
  • 16:1Delta9
  • cis-delta-9-Hexadecenoate
  • FA 16:1
  • 9-Hexadecenoic acid, (9Z)-
  • 9-Hexadecenoic acid, (Z)-
  • cis-delta9-Hexadecenoic acid
  • hexadec-9-enoic acid
  • Palmitoleic acid (constituent of spirulina)
  • Palmetoleic acid, Palmetoleic acid (C16:1 cis)
  • palmitoleic-acid
  • C16:1n-7

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
254.41 g/molcalc.
Exact mass
254.2246 Dacalc.
LogP (octanol/water)
5.33calc.
Topological polar surface area
37.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
13calc.
Heavy atoms
18calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.81calc.
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

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • 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.
  • 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

Palmitoleic acid suppliers

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All 30 suppliers
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Where suppliers are based

30 suppliers in 6 countries

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Palmitoleic 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

Use classes: Surfactants, Safer Chemical Classes.

Roles

  • Daphnia galeata metabolite
  • Daphnia metabolite
  • Escherichia coli metabolite
  • algal metabolite
  • animal metabolite
  • bacterial metabolite
  • crustacean metabolite
  • enzyme inhibitor
  • eukaryotic metabolite
  • human blood serum metabolite
  • human metabolite
  • mammalian metabolite
  • metabolite
  • prokaryotic metabolite

Functional uses

  • Surfactant (surface active agent)

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • Safer Choice ingredient list (USA)

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2916.19Indicative HS code

Unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides…

World exports in 2024
$674M
−9.6% vs 2023, imports $722M
2019 to 2024
Top exporters
  1. China44.5%
  2. Germany15.3%
  3. India * partner reported11.5%
Top importers
  1. United States17.1%
  2. Netherlands7.8%
  3. South Korea7.0%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Palmitoleic acid?

Palmitoleic acid is a hexadec-9-enoic acid in which the double bond at position C-9 has cis configuration. It has a role as an Escherichia coli metabolite, an EC 3.1.1.1 (carboxylesterase) inhibitor, a Daphnia galeata metabolite, an algal metabolite and a human blood serum metabolite.

What is the CAS number of Palmitoleic acid?

The CAS registry number of Palmitoleic acid is 373-49-9.

What is the molecular formula and weight of Palmitoleic acid?

The molecular formula of Palmitoleic acid is C16H30O2 and its molar mass is 254.41 g/mol.

What is Palmitoleic acid used for?

Use classes: Surfactants, Safer Chemical Classes.

Is Palmitoleic acid hazardous?

Palmitoleic acid carries the GHS signal word "Warning". 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 Palmitoleic acid?

Palmitoleic acid is usually classified under HS code 291619 (Unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Palmitoleic acid?

CompoundList lists 30 suppliers of Palmitoleic acid in China, United States, Germany, Hong Kong and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Palmitoleic acid?

Suppliers quote Palmitoleic 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

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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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