Keywords: Dinaphthylene dioxide molecule spacefill.png Space-filling model of the dinaphthylene dioxide molecule also known as peri-xanthenoxanthene or PXX C H O 2015-01-05 own DS Visualizer Jynto more from this user Ball-and-stick version cc-zero Images by Jynto Polycyclic aromatic compounds Six-membered oxygen heterocycles Space-filling models |