A private chemistry lab notebook in your browser
Draw structures, work out stoichiometry, write up procedures, and export everything to PDF. There are no accounts and no server — your notebook lives only on your own computer or your Google Drive.
What it is
This is an electronic lab notebook (ELN) for synthetic chemistry that runs entirely in your browser. Organize your work into a notebook of compounds and reactions, keep the chemistry and the numbers together, and produce a tidy record you can archive or share.
Draw structures
Sketch compounds and reactions with the built-in Ketcher editor. Look up molecules from PubChem by name.
Stoichiometry tables
Enter any amount — mass, moles, volume — and the table derives the rest, tracks equivalents, and flags the limiting reagent.
Procedures
Generate a draft experimental procedure from your reaction and conditions, then edit it to match what you actually did.
Export to PDF
Produce a clean, human-readable PDF of your notebook — with the underlying data embedded so it can be reopened later.
Your data stays yours
There is no backend and no account to create. Nothing you draw or type is ever sent to a server we control. Your notebook is saved only where you choose to put it.
On your computer
Save the notebook as a file on your own hard drive, or keep it in your browser's local storage. It never leaves your machine.
On your Google Drive
Connect your own Google Drive to store notebooks there. The app only touches the files it creates — nothing else in your Drive.
Collaborate via Drive
Because notebooks are just files, you can share a Google Drive folder with colleagues and work from the same notebooks together.
Ready to start?