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Draw a structure.

Formula, molecular weight and canonical SMILES appear instantly, free and without signing in. Spectra, stability, toxicology and synthesis routes on the same molecule open up with a free account.

Sketcher preview with paracetamol: structure editor on the left, formula C8H9NO2, molecular weight 151.16 g/mol and canonical SMILES on the right.

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Everything on the same molecule

The full editor

Ketcher 3.12, structures unambiguous and reusable as SMILES.

Analysis on right-click

Properties, spectra, stability, toxicology and retrosynthesis on the same molecule.

Names and patents

Trade names and patents for the structure you drew, via PubChem.

Chat in the editor

Ask in your own words. The chat calls a tool for every number; you review the wording like any draft.

Notebook

Every step is recorded with its version and is reproducible.

Nothing to install

Runs in the browser. Your IT does not need to set anything up.