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Chemistry Central publishes peer-reviewed open access research in chemistry.
Provides access to three databases containing information on millions of compounds and substances and data from over 800 BioAssays. Users can search for physical data, structures, specific molecules, and targets of bioactivity, among other information. From the U.S. NCBI.
"Collections of detailed, reliable, and carefully checked procedures for the synthesis of organic compounds." Requires brief registration.
Toxicology, hazardous chemicals, environmental health, and toxic releases. From U.S. National Institutes of Health.
Collaborative 3D-encyclopedia of proteins & other molecules
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