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SketchIQThis feature in other tools
Charges, isotopes and atom labels in SketchIQ
Element palette and charge buttons beside a caffeine drawing.

- What we checked
- Charges, isotopes and arbitrary element labels can be set on atoms.
- Result
- Yes, according to the manual: Isotopes can be drawn or entered through SMILES. Yes, according to the manual. Isotopes can be drawn or entered through SMILES.
- Version we tested
- dpl_44ysNf1Cbx9iepy8z4SrXP7…, on macOS 27.0.1 arm64
- Manual
- proteiniq.io