Using I Lab via ChemSketch 

For example, a search according to the following query structure will result in all condensed 

furans, thiophenes, and their derivatives with no halogen substituents: 

1.  First draw the following structure: 

CH

3

H C

3

H C

CH

3

3

2. Click Any Atom 

 and then on the two atom groups as shown: 

A

A

H C

CH

3

3

3.  Now click the right bottom triangle of Any Atom and, from the set of buttons that appears, 

click Atom from List 

, then click on the right most group of atoms.  In the Query Atom 

dialog box, type O,S,Se,Te: 

ACD/I Lab via ChemSketch  

User's Guide 

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