http://www.camsoft.com
2. the Chemistry place
http://www.chemplace.com
3. Chemical Online
http://www.chemicalonline.com
4. ChemCenter
http://www.ChemCenter.org
5. Chem Scope
http://www.chemscope.com
6. American Chemical Society
http://www.acs.org
7. Chemical Week
http://www.chemweek.com
8. ChemWeb
http://www.chemweb.com
9. dotfinechem
http://www.dotfinechem.com
10. Biochemist On-Line
http://www.biochemist.com