NCI Drug Dictionary
nci.nih.gov/drugdictionary/
Drug Bank
http://www.drugbank.ca/
IUPHAR: data base of receptors and Ion channels
www.iuphar-db.org/index.jsp
In the pipeline: a medicinal chemistry blog
pipeline.corante.com/
The Binding Database: binding affinities of drug targets with small, drug-like molecules
www.bindingdb.org/bind
ChEMBL: a database of bioactive drug-like small molecules
www.ebi.ac.uk/chembl/
PubChem
pubchem.ncbi.nlm.nih.gov/
Binding MOAD: protein crystal structures with relevant ligands and binding data
bindingmoad.org/
GRAC: guide to receptors and channels
www.guidetopharmacology.org/
PDBbind database: experimentally measured binding affinity data
http://sw16.im.med.umich.edu/databases/pdbbind/index.jsp
Therapeutic Targets Database: provides information about known therapeutic protein targets
http://bidd.nus.edu.sg/group/cjttd/TTD_HOME.asp