openclatura — draw a molecule, get its IUPAC name

Draw

Loading structure editor…

Try:

SMILES: —

IUPAC name

Draw a structure to name it.

Verify with OPSIN — parse the name back to a structure (py2opsin) and compare with your drawing Don't cache my structures — skip storing results for the molecules you draw

Because naming is fully deterministic, we store each result under a hash of the structure so a molecule that has already been named comes back instantly. That cache exists only to make the site fast — the structures are never analysed, shared, sold, or used for training, and nothing about you is stored alongside them. Tick the box to opt out and your drawings will not be written to it; we then only count that a structure was named, for usage statistics.