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ChemvasThis feature in other tools
Charges, isotopes and atom labels in Chemvas
Nitrogen and oxygen labels in a caffeine structure.

- What we checked
- Charges, isotopes and arbitrary element labels can be set on atoms.
- Result
- Partly: Charges and arbitrary labels; molecular model lacks isotope fields. Partly. Charges and arbitrary labels; molecular model lacks isotope fields.
- Version we tested
- 0.28.0, on macOS 27.0.1 arm64
- Manual
- github.com