User guide

Any. Default. Finds compounds in which the selected atoms can be a member of any type of ring, or a member of no
ring at all.
No ring bonds. Finds compounds in which the selected atoms are acyclic.
As drawn. Finds compounds in which the selected atoms reside in the same type and number of rings as drawn.
Simple ring. Finds compounds in which the selected atoms is a member of only one ring (the atom has two ring
bonds).
Fusion. Finds compounds in which the selected atoms lies at ring fusions (the atom has three ring bonds).
Spiro or higher. Finds compounds in which the selected atoms is a member of a spiro or higher linkage (the atom
has four or more ring bonds).
Unsaturation
The Unsaturation property specifies whether a multiple bond is attached to the selected atoms.
Unspecified. Default. Finds compounds regardless of whether a multiple bond is attached to the atom.
Must be absent. Finds compounds that do not have a multiple bond attached to the selected atoms.
Must be present. Finds compounds that have at least one multiple bond (double, triple or aromatic) attached to the
selected atoms.
Reaction change
The Reaction Change property specifies whether a change occurs at selected atoms after a reaction. This property is
meaningful only when searching a database that contains chemical reactions. In ChemBioFinder, only the product
atom is checked. The stereo designation is ignored on reactants.
May be anything. Default. Finds all reactions regardless of any change to selected atoms after a reaction.
Must be as specified. Finds all reactions that are changed at the selected atoms exactly as specified by the reaction
center property in the Atom Properties dialog box.
Reaction stereo
The Reaction Stereo property specifies that the selected atoms are stereocenters in a reaction. This property is mean-
ingful when only searching a database containing chemical reactions.
ChemBioDraw 13.0
Chapter 11: Query structures 205 of 401