Reaction Center

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The Reaction Center property specifies how the selected bonds are affected in a reaction. This property is only meaningful when searching a database containing chemical reactions.

The Reaction Center options are described in the following table

Option	Search Result
Unspecified	Default. Finds compounds regardless of whether the selected bonds are affected by the reaction.
Center	Finds compounds where the selected bonds are affected by a reaction, but the type of change is unspecified.
Make/Break	Finds compounds where the selected bonds are either broken or created in a reaction.
Change	Finds compounds where the bond order of the selected bonds changes in a reaction.
Make& Change	Finds compounds where the selected bonds are formed, broken, or undergo a change in bond order.
Not Center	Finds compounds where the selected bonds are not part of the reaction center.
Not Modified	Finds compounds where the selected bond's orders do not change, but which may or may not be part of the reaction center.
Unmapped	Finds all compounds.