CheMBL
ChEMBL is a free database that provides access to 2D structures and other calculated properties for small, bioactive molecules.
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ChemSpider
ChemSpider is a free chemical database that gathers data from various sources to provide a comprehensive source for all data freely available on chemical molecules.
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ChemWeb
ChemWeb is a portal for Open Access chemistry publications. ChemWeb provides a listing of databases that provide free abstracts and some full-text articles from publishers such as Wiley, Elsevier, Springer, Bentham Science and Taylor & Francis.
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eMolecules
eMolecules is a free database that provides a compound library which helps researched with acquisition of compounds used in drug discovery. It identifies vendors and provides prices for each compound.
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PubChem
PubChem is a collection of databases developed by the National Center for Biotechnology Information (NCBI). PubChem provides a chemical structure similarity search tool and three linked databases:
- PubChem Substance
- PubChem Compound
- PubChem BioAssay
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