·        ChemWeb

http://www.chemweb.com/

·        American Chemical Society

http://www.chemistry.org/portal/a/c/s/1/home.html

·        Chemical Finder

 http://chemfinder.cambridgesoft.com/

·        Science Geek

http://www.sciencegeek.net/

·        PBS~ NOVA

http://www.pbs.org/wgbh/nova/

·        Organic Chemistry Resources Worldwide

http://organicworldwide.net/