Are you looking for bioactivity information for small molecules? ChemSpider now provides a direct link to the ChEMBL database from the European Bioinformatics Institute (EBI).
For example, take a look at the record for Fluconazole, an anti-fungal drug, in ChemSpider. If you go to the Associated Data Sources box and select Biological Data you will find the following links:
Clicking on the External ID link associated with ChEMBL will take you to the ChEMBL record.
The EBI produce both ChEBI (Chemical Entities of Biological Interest) and ChEMBL, a database of approximately 500,000 bioactive compounds. The bioactivities listed are abstracted from the scientific literature and are linked directly to the article.
You could also start your search in ChEMBL and then link back to ChemSpider to find additional information using the Std. InChIKey displayed in the ChEMBL record.
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