Keywords: Phthalazine-3D-spacefill.png Space-filling model of the phthalazine molecule a heterocycle and a simple aromatic ring Colour code 505050 Carbon C black<br> F0F0F0 Hydrogen H white<br> 3C50FA Nitrogen N blue<br> 2011-06-12 own DS Visualizer Jynto talk Ball-and-stick version cc-zero Phthalazines Simple aromatic rings Images by Jynto |