Free open-source chemical structure editor: draw molecules and reactions, fill in reagent tables. Opens and saves ChemDraw files (CDX, CDXML) and works with Word. Runs in the browser and offline on Windows, Mac and Linux.
chemistry cheminformatics offline-first molecule smiles organic-chemistry cdx inchi molecule-editor molfile chemdraw chemical-structures structure-editor cdxml mdl-molfile nmr-prediction reaction-scheme
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Updated
Oct 21, 2026 - HTML