Don’t worry about writing correct chemical names, or finding CAS numbers
anymore. Use the universal language of chemistry - structural formula!
Simply draw a structure and search our WWW Chemicals Catalog for it.
If you already have your structure file in any format, it can be used for searching
as well. Click here to search by a structure file.
You don’t have to install any additional programs, Java applets developed by
Anatoli O. Krassavine
- the author of ChemSymphony - are already here.
There are four of them: Preferences, Editor Tools, Prepare Query Here, and Submit.
They will appear on your screen after you click on the above link to our catalog, or
the links to the databases of chemicals tested by NCI. Please allow some time for
these applets to load. Your screen will look like one below. Sometimes you need to
move the scrollbar down. Before you go on to searching, you might want look
through our tutorial how to write chemical structures with the help of the Editor Tools.