Chemical Industry.com – Chem Info
Drug Adverse Reaction Target (DART)
Distributed Structure-Searchable Toxicity (DSSTox) Public Database Network (EPA)
Environmental Contaminants Encyclopedia
National Toxicology Program Database
Target Protein Database - This database is an attempt to catalog in a convenient, searchable fashion the publicly available information about the identities of mammalian proteins that become covalently adducted by chemically-reactive metabolites of xenobiotic agents