Chemical Entities of Biological Interest (ChEBI) is a freely available dictionary of molecular entities focused on ‘small’ chemical compounds.


Search for only     All in ChEBI    

Example: iron*, InChI=1S/CH4O/c1-2/h2H,1H3, caffeine

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Documentation

User Manual Learn more about the data fields in the ChEBI and data sources for ChEBI. If you are unable to access the online Google document, please use the FTP link to view our manuals.

Train Online Tutorial An online quick tour (0.5 h) and a more detailed tour (1 h) covering much of the material in the User Manual can be found on the EBI Train Online site here.

Statistics Graphs showing the growth of ChEBI, the numbers of curated, submitted and unchecked entries, the numbers of links to other resources and the sources of the information present in ChEBI

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Downloads

SDF files ChEBI provides its chemical structures and additional data in structure-data file (SDF) format.

Ontology files ChEBI ontology is provided in the W3C standard Web Ontology Language (OWL) and OBO formats.

Database files ChEBI is stored in a relational database and we currently provide the ChEBI tables in flat-file tab delimited format, as an Oracle binary dumps and a generic SQL dumps for MySQL and PostgreSQL database.

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Entity of the month

1st July 2019
Cocaine


Cocaine (CHEBI:27958) is a natural alkaloid that was first isolated in 1859 by the German chemist, Albert Niemann (1834–1861) from the leaves of the Erythroxylum coca shrub found in South America [1]. For centuries, natives of this region consumed the drug by chewing coca leaves to boost energy, combat fatigue resulting from working at high altitudes and stave off hunger [2].

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