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OpenReactionsThis feature in other tools
Charges, isotopes and atom labels in OpenReactions
Element and charge controls beside a labeled structure

- What we checked
- Charges, isotopes and arbitrary element labels can be set on atoms.
- Result
- Partly: Charges and labels editable; isotopes imported through SMILES/MOL. Partly. Charges and labels editable; isotopes imported through SMILES/MOL.
- Version we tested
- Hosted, 5 Nov 2026, on macOS 27.0.1 arm64
- Manual
- openreactions.com