MolChart

Clear all objects from the canvas.

Create a new document to draw molecules on. Returns doc_id to use in other tools.

Create a new molecule from SMILES notation.

Create a reaction or electron-pushing arrow on the canvas.

Create a text label on the canvas.

Delete an atom and all connected bonds.

Delete a bond.

Delete a document permanently

Delete an object from the canvas.

Draw a complete chemical reaction with proper layout. Creates reactants, arrow with conditions, and products all in one row with + signs. This is the recommended way to draw reactions. Each species can be a string (SMILES or formula) or an object with 'formula' and optional 'coefficient'.

Enumerate possible tautomers of a molecule

Export molecule to 3MF format for 3D printing

Export a molecule in CDXML format (ChemDraw)

Export a molecule in MOL file format (V2000)

Export molecule to SDF format with 3D coordinates

Export a molecule as SMILES string

Generate 3D coordinates for a molecule with optional geometry optimization

Get the current canvas state including all molecules

Get detailed information about a PubChem compound by CID

Import a molecule from MOL file (V2000) format

List all available documents

List all objects on the canvas with their IDs, types, and basic info

Move an object to new canvas coordinates.

Open an existing document to continue working on it

Search PubChem database by compound name

Search PubChem database by structure (identity, similarity, substructure)

Recolour or re-weight an existing arrow (style.stroke / style.strokeWidth,

Set the formal charge on an atom.

Change the element of an atom.

Pin (or reset) the number of hydrogens drawn on an atom.

Modify an existing bond's order or stereochemistry.

Override (or reset) the lone-pair count drawn on an atom, and show the dots.

Recolour a molecule (QA-0066). Writes the same keys the toolbar colour

Restyle an existing label: colour, size, weight, italic, family, underline.

Display the document in the MolChart widget. Call this after creating or modifying molecules to show the result to the user. This is the ONLY way to display the widget. If doc_id is not provided, shows the most recently used document.

Draw (or hide) lone-pair and unpaired-electron dots on a molecule.

Update document properties (title, notes)

Validate molecular structure for common issues (valence errors, missing coordinates)