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 November 2018
Fentanyl


The long-standing addiction of sectors within the US population to opioid-based painkillers has become even more dangerous over the last few years. Fentanyl (CHEBI:119915), a synthetic opioid first synthesised by Paul Janssen (1926–2003) in 1959 is one of the most powerful painkillers on the market, being around 50–100 times more potent than morphine [1]. Commonly used as its citrate salt (brand name: Abstral), it is prescribed by doctors for the management of pain in cancer patients.

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