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Synthesis reagents

4-Hydroxynonenal

Also known as 4-Hydroxy-2-nonenal, 4-Hydroxy-2,3-nonenal, (2E)-4-hydroxynon-2-enal

CAS 75899-68-2Formula C9H16O2Molar mass 156.23 g/mol
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4-Hydroxynonenal chemical structure, C9H16O2, CAS 75899-68-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
75899-68-2
Formula
C9H16O2
Molar mass
156.23 g/mol
HS code
291249
Category
Synthesis reagents

What is 4-Hydroxynonenal?

Plain description, key identifiers and synonyms

4-hydroxynon-2-enal is an enal consisting of non-2-ene having an oxo group at the 1-position and a hydroxy group at the 4-position. It has a role as a human metabolite. It is a 4-hydroxynonenal, a hydroxyaldehyde and an enal.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(E)-4-hydroxynon-2-enal
CAS number
75899-68-2 CAS number cross-checkedOther or deprecated CAS: 128946-65-6, 29343-52-0
Molecular formula
C9H16O2
UNII
K1CVM13F96
MDL number
MFCD00211020
InChIKey
JVJFIQYAHPMBBX-FNORWQNLSA-N
InChI
InChI=1S/C9H16O2/c1-2-3-4-6-9(11)7-5-8-10/h5,7-9,11H,2-4,6H2,1H3/b7-5+
Canonical SMILES
CCCCCC(O)C=CC=O
Isomeric SMILES
CCCCCC(/C=C/C=O)O

Synonyms

  • 4-Hydroxy-2-nonenal
  • 4-Hydroxy-2,3-nonenal
  • (2E)-4-hydroxynon-2-enal
  • 4-hydroxynonen-2-al
  • 4-HNE cpd
  • (E)-4-hydroxynon-2-enal
  • trans-4-Hydroxy-2-nonenal
  • (E)-4-hydroxy-2-nonenal
  • (2E)-4-Hydroxy-2-nonenal
  • 2-Nonenal, 4-hydroxy-, (2E)-
  • 4-hydroxy-2E-nonenal
  • 2-Nonenal, 4-hydroxy-
  • HNE
  • 4-Hydroxynonenal?
  • (+/-)4-Hydroxynon-2-enal
  • (E)-4-Hydroxynonenal
  • 4-hydroxy-2-trans-nonenal
  • FAL 9:1, O
  • (.+/-.)-4-Hydroxy-2E-nonenal
  • HSCI1_000340
  • 4-Hydroxy-2-nonenal, trans-
  • trans-4-Hydroxy-2-nonenal Solution in Ethanol, 100ug/mL

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
156.23 g/molcalc.
Exact mass
156.115 Dacalc.
LogP (octanol/water)
1.68calc.
Topological polar surface area
37.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
6calc.
Heavy atoms
11calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.67calc.
Formal charge
0calc.
Stereocentres
1calc.
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.

4-Hydroxynonenal suppliers

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

All 11 suppliers
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Where suppliers are based

11 suppliers in 5 countries

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4-Hydroxynonenal 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

Pharmacological actions

  • Cross-Linking Reagents
  • Cysteine Proteinase Inhibitors

Roles

  • animal metabolite
  • eukaryotic metabolite
  • human metabolite
  • mammalian metabolite
  • 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 4-Hydroxynonenal is traded under.

HS 2912.49Indicative HS code

Aldehyde-alcohols, aldehyde-ethers, aldehyde-phenols and aldehydes with other oxygen…

World exports in 2024
$159M
−9.6% vs 2023, imports $171M
2019 to 2024
Top exporters
  1. China36.7%
  2. India * partner reported27.5%
  3. Germany13.9%
Top importers
  1. China16.0%
  2. United States15.7%
  3. India * partner reported9.6%

* Partner reported figures, a lower bound.

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

The HS code shown for 4-Hydroxynonenal is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 4-Hydroxynonenal, based on the data on this page

What is 4-Hydroxynonenal?

4-hydroxynon-2-enal is an enal consisting of non-2-ene having an oxo group at the 1-position and a hydroxy group at the 4-position. It has a role as a human metabolite. It is a 4-hydroxynonenal, a hydroxyaldehyde and an enal.

What is the CAS number of 4-Hydroxynonenal?

The CAS registry number of 4-Hydroxynonenal is 75899-68-2. Other or deprecated CAS numbers: 128946-65-6, 29343-52-0.

What is the molecular formula and weight of 4-Hydroxynonenal?

The molecular formula of 4-Hydroxynonenal is C9H16O2 and its molar mass is 156.23 g/mol.

What is 4-Hydroxynonenal used for?

Known uses and roles of 4-Hydroxynonenal include synthesis reagents in research and laboratory, animal metabolite, eukaryotic metabolite, human metabolite, mammalian metabolite and 3 more.

Is 4-Hydroxynonenal hazardous?

No GHS hazard classification for 4-Hydroxynonenal 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 4-Hydroxynonenal?

4-Hydroxynonenal is usually classified under HS code 291249 (Aldehyde-alcohols, aldehyde-ethers, aldehyde-phenols and aldehydes with other oxygen…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 4-Hydroxynonenal?

CompoundList lists 11 suppliers of 4-Hydroxynonenal in United States, China, Germany, Spain and 1 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 4-Hydroxynonenal?

Suppliers quote 4-Hydroxynonenal 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 4-Hydroxynonenal

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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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