CIPAC (COLLABORATIVE INTERNATIONAL PESTICIDES ANALYTICAL COUNCIL)
AOAC
Chemdex.org Chemical Databases
CHEMFINDER
Internet Searching and Information
Chemical Abstract Service (CAS)
Producer of the world's largest and most comprehensive databases of chemical information.
Compendium of Pesticide Common Names
Extension Toxicology NETwork (EXTOXNET)
Science-based information about pesticides for the non-expert.