Sketch it.
Snap it.
Bond it.

A chemical structure editor that feels like drawing on paper — and thinks like a chemist.

Start Drawing

or press D

this is caffeine — grab an atom
· pencil: drag from an atom to grow
· click a bond to make it double

Bond angles and lengths settle themselves as you sketch.

SMILES, MOL, SVG and PNG — one click, publication-ready.

Runs entirely in the browser. Your structures never leave it.

Sketch it.Snap it.Bond it.