SHEET /m/2-nonenal · PubChem CID 17166 · CAS 30551-15-6 · REV 2026.07
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2-Nonenal
from sourceC9H16O · 140.22 g/mol
beta-hexylacrolein · heptylideneacetaldehyde · alpha-Nonenyl aldehyde
What is 2-Nonenal?
A cucumber-and-paper smell familiar from stale beer and the scent of old books. 2-Nonenal (C9H16O, 140 g/mol) is an aldehyde carried in everyday scent and aroma. Found in beer. from source
CategoryScent & aroma
Chemical familyAldehydes
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Fig. 1 · 2D structure RDKit
SMILES
CCCCCCC=CC=OWhere you'll find it
Curated by MoleculeFinder from source
Toxicity & hazards
WarningIrritantH315, H319from source
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Where 2-Nonenal leads
Found infrom source
Relatedcomputed
Oleic acid48% similarNo functional group in common: Oleic acid carries a carboxylic acid group, while 2-Nonenal carries an aldehyde group.Erucic acid48% similarNo functional group in common: Erucic acid carries a carboxylic acid group, while 2-Nonenal carries an aldehyde group.Linoleic acid44% similarNo functional group in common: Linoleic acid carries a carboxylic acid group, while 2-Nonenal carries an aldehyde group.Arachidonic acid41% similarNo functional group in common: Arachidonic acid carries a carboxylic acid group, while 2-Nonenal carries an aldehyde group.Hexane35% similar