Compound Searching in Chemical Abstracts

To open the Compound Search window, please click

The Compound Search window looks like this:

For example, if you type "penicillin" in the "Find" section, the browse window will be as follows:

And then double clicking "penicillin" gives us the following results:

A new substance hierarchy window is displayed that identifies the entries nested inside the selected heading. Because this is an expansion of a substance from the First Level headings, it's referred to as Second Level of the hierarchy.

The Second Level of the hierarchy contains links to: Documents for index
headings that have no subordinate parts.

Subordinate headings are grouped into three categories:

You may continue to expand substances preceded by a + symbol to see
the nested entries by selecting the term and clicking .

This displays the Third Level entries.

If you wish to collapse substances preceded by a - symbol, click

Click to display search results.