Defining an Alternative Group

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In ChemDraw Pro, you can create alternative group definitions (R, G, etc.) that represent a set of substituents, any one of which will match the query.

To define an alternative group:

1. Click the Alternative Group query tool .

2. Click and drag to create an area large enough to draw the alternative groups.

The Alternative Group Title box appears.

3. Type a title, such as R₁, in the Alternative Group Title box.

4. Draw the substructure fragments in the Alternative Group box.