|CDX Constant Name:||kCDXProp_ReactionStep_Atom_Map|
|CDX Constant Value:||0x0C00|
|Property of objects:||kCDXObj_ReactionStep|
|First written/read in:||ChemDraw 6.0|
Represents pairs of mapped atom IDs; each pair is a reactant atom mapped to to a product atom.
This property is redundant with the two properties kCDXProp_ReactionStep_Atom_Map_Manual and kCDXProp_ReactionStep_Atom_Map_Auto. A given mapping may be listed in this property and/or in one of the others. Programs that care about the presence of a mapping but not the history of its creation (automatically or manually) should examine this field; programs that care about the automatic/manual history of a mapping should consult the others.
If this property is absent:
This Reaction Step has no atom-atom mapping.