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SHEET /m/caffeic-acid · PubChem CID 689043 · CAS 331-39-5 · REV 2026.07

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Caffeic acid

from source

C9H8O4 · 180.16 g/mol

Cichoric acid

What is Caffeic acid?

Named for coffee, where it is abundant, but present in nearly every plant. It is half of chlorogenic acid, the main polyphenol in a cup. Found in coffee. from source

CategoryPlant
Chemical familyCarboxylic AcidsAromaticsPhenols
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Fig. 1 · 2D structure RDKit

SMILESC1=CC(=C(C=C1/C=C/C(=O)O)O)O

Where you'll find it

Coffeewhat else is in it →

Curated by MoleculeFinder from source

Toxicity & hazards

WarningIrritantHealth hazardH315, H319, H335, H351, H361from source

Keep roaming

Where Caffeic acid leads

Relatedcomputed
Ferulic acid64% similarBoth carry a phenol and a carboxylic acid group.Cinnamic acid54% similarBoth carry a carboxylic acid group.Curcumin45% similarBoth carry a phenol group.Chlorogenic acid44% similarBoth carry a phenol and a carboxylic acid group.

Sources & methodology

PubChem CID
689043
Wikidata
Q414116
Structure
PubChem → RDKit
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Everyday relationships
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