SHEET /m/cinnamic-acid · PubChem CID 444539 · CAS 621-82-9 · REV 2026.07
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Cinnamic acid
from sourceC9H8O2 · 148.16 g/mol
Phenylacrylic acid · trans-b-Carboxystyrene · trans-beta-carboxystyrene · Benzeneacrylic acid
What is Cinnamic acid?
The backbone plants build lignin, flavonoids, and coumarins from. It carries a faint honey-cinnamon smell of its own. from source
CategoryPlant
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Fig. 1 · 2D structure RDKit
SMILES
C1=CC=C(C=C1)/C=C/C(=O)OToxicity & hazards
WarningIrritantH315, H319, H335from source
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Where Cinnamic acid leads
Relatedcomputed
Caffeic acid54% similarBoth carry a carboxylic acid group.Cinnamaldehyde48% similarBoth carry an aromatic ring.Ferulic acid44% similarBoth carry a carboxylic acid group.Benzaldehyde43% similarBoth carry an aromatic ring.Fumaric acid40% similarBoth carry a carboxylic acid group.Benzoic acid38% similarBoth carry a carboxylic acid group.