The expectation was that any structural change made after sample creation would trigger a red exclamation mark at the sample level, prompting the chemist to accept the change and update the sample. However, I observed that making a minimal structural change does not always trigger an update.
Answer
When a chemist creates a Chemical Sample from a reactant or product in a ChemDraw reaction, the system can display a warning indicator (red exclamation mark) if the associated reactant or product is subsequently modified in a substantive way.
Signals provides a capability that allows administrators to define what constitutes a substantive change to a chemical structure. Only changes that meet the configured criteria will trigger a sample update warning.
As a result, certain minimal structural modifications may not trigger an update notification. Examples include:
Adding or removing specific substituents
Changing a bond representation from a regular bond to a wedge bond
Other minor structural edits that are not configured as substantive changes by the administrator
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