ChemDraw User's Manual - CambridgeSoft

AdministratorDefining Attachment PointsSpecify where the fragments should bond to theparent structure at the alternative group label:1. Click the diamond shaped Attachment Pointtool on the Chemical Symbols palette.2. Do one of the following:• Click a substructure fragment where youwant to place the attachment point.• Point to a substructure fragment where youwant to place the attachment point and pressthe Hotkey “.”.An attachment point symbol appears.When you create a parent compound that containsan alternative group you defined, an attachmentpoint symbol appears next to the label. Theattachment point number matches that found in thedefinition.R 11R 11 NH 211OHFAttachmentpoint symbol3. Repeat step 2 for all fragments.The number displayed in the attachment pointsymbol is the attachment rank order. See theexample in “Multiple Attachment Points” on page168.Multiple Attachment PointsIf you have well-defined multiple attachment pointson your structure fragments, you can performsearches for specific materials. This type of searchis especially useful for searching forconformationally similar structures.For example, you want to find the two compoundsbelow:NH 2ONH 2168•Drawing Query StructuresCambridgeSoftAlternative Groups