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Charges, isotopes and atom labels in MolSketch
A caffeine structure with nitrogen and oxygen atom labels.

- What we checked
- Charges, isotopes and arbitrary element labels can be set on atoms.
- Result
- Partly: Charges/custom labels supported; stored isotopes lack editor/display controls. Partly. Charges/custom labels supported; stored isotopes lack editor/display controls.
- Version we tested
- build m0PiI1PnCmq4Tn2qz-p-a, on macOS 27.0.1 arm64
- Manual
- molsketch.net