Keywords: Dinaphthylene dioxide molecule ball.png Ball-and-stick 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 Space-filling version cc-zero Images by Jynto Polycyclic aromatic compounds Six-membered oxygen heterocycles Ball-and-stick models |