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


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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

14th June 2022
Potassium carbonate


A team of researchers from Eindhoven University of Technology, TNO and its spin-out company Cellcius have invented a 'heat battery' based on salt and water that can potentially make millions of homes in Europe gas-free in the near future [1]. It took 12 years to design and develop a battery that could be transformed into a scalable solution and comes at a critical time when the EU is looking to wean itself off Russian gas dependence following the invasion of Ukraine [2]. The battery contains no toxic chemicals, rare or precious metals, and the salt contained within it is potassium carbonate (CHEBI:131526) which is harmless, cheap and abundantly available [1].

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