caffeic acid   Click here for help

GtoPdb Ligand ID: 5155

PDB Ligand
Compound class: Natural product

caffeic acid is commercially available from our sponsors

2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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Physico-chemical Properties
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Physico-chemical Properties

Calculated molecular properties are available for small molecules and natural products (not peptides). Properties were generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/). All properties were selected to enable the prediction of the Lipinski Rule-of-Five profile or ‘druglikeness’ for each ligand. For more info on each category see the help pages.

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Hydrogen bond acceptors 2
Hydrogen bond donors 3
Rotatable bonds 2
Topological polar surface area 77.76
Molecular weight 180.04
XLogP 1.26
No. Lipinski's rules broken 0

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)
SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)

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Canonical SMILES OC(=O)C=Cc1ccc(c(c1)O)O
Isomeric SMILES OC(=O)/C=C/c1ccc(c(c1)O)O
InChI InChI=1S/C9H8O4/c10-7-3-1-6(5-8(7)11)2-4-9(12)13/h1-5,10-11H,(H,12,13)/b4-2+
InChI Key QAIPRVGONGVQAS-DUXPYHPUSA-N

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)
Classification Click here for help
Compound class Natural product
IUPAC Name Click here for help
(2E)-3-(3,4-dihydroxyphenyl)prop-2-enoic acid
Database Links Click here for help
Specialist databases
Antibiotic DB Antibiotic DB Database logo Caffeic Acid Phenethyl Acid
Other databases
CAS Registry No. 331-39-5
ChEBI CHEBI:36281
ChEMBL Ligand CHEMBL145
GtoPdb PubChem SID 178101847
PubChem CID 689043
RCSB PDB Ligand DHC
Search Google for chemical match using the InChIKey QAIPRVGONGVQAS-DUXPYHPUSA-N
Search Google for chemicals with the same backbone QAIPRVGONGVQAS
UniChem Compound Search for chemical match using the InChIKey QAIPRVGONGVQAS-DUXPYHPUSA-N
UniChem Connectivity Search for chemical match using the InChIKey QAIPRVGONGVQAS-DUXPYHPUSA-N
Wikipedia Caffeic acid

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MedChemExpress
Caffeic acid (links to external site)
Cat. No. HY-N0172
trans-Caffeic acid (links to external site)
Cat. No. HY-121231