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This dictionary of over 400,000 chemicals (names, synonyms, and structures) includes links to National Library of Medicine and other databases and resources,
This free, searchable database contains chemical structure information for over 26 million structures. It lets you search by systematic names, synonyms, trade names, and database identifiers.
Dynamic Periodic Table
Explore properties, isotopes, compounds, and more with this interactive periodic table.
Periodic Table of Videos
Maintained by the University of Nottingham, this website provides educational streaming videos for each element in the periodic table.
The Wired Chemist
A collection of online chemistry resources, featuring animations, learning modules, and laboratory tutorials for chemistry students.
PubChem: Open Chemistry Database
Use the Compound Search function find chemical information about biological properties. From the National Center for Biotechnology Information, which is part of the National Library of Medicine.