Signals Notebook: Why Does the Stoichiometry Grid Export SMILES Instead of InChI?

Description

After upgrading to Signals Notebook 26.8 or later, users may notice that the stoichiometry grid exports chemical structures in SMILES format instead of InChI format.

Cause

This is an intentional product change introduced in Signals Notebook 26.8 and communicated on the What’s New, Updates & Releases page for the 26.7 September 2026 release.

Solution

Administrators should review any scripts, integrations, and automated workflows that consume stoichiometry grid exports and verify that they support SMILES values instead of InChI values.

This may include:

• Custom integrations
• Data import and export processes
• Reporting workflows
• External applications that consume exported structure data

If a downstream process requires InChI, update the workflow to convert SMILES values to InChI before further processing.