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SketChemThis feature in other tools
Charges, isotopes and atom labels in SketChem
Element palette beside a caffeine structure with labeled atoms.

- What we checked
- Charges, isotopes and arbitrary element labels can be set on atoms.
- Result
- Partly: Charges and element labels; no dedicated isotope-setting control. Partly. Charges and element labels; no dedicated isotope-setting control.
- Version we tested
- 6ed8c631, on macOS 27.0.1 arm64
- Manual
- github.com