Keywords: Theophylline 3D ball.png Ball-and-stick model of the theophylline molecule also known as dimethylxanthine a drug used to treat respiratory diseases Colour code 505050 Carbon C black<br> F0F0F0 Hydrogen H white<br> F51E1E Oxygen O red<br> 3C50FA Nitrogen N blue<br> 2011-06-19 own DS Visualizer Jynto talk Space-filling version cc-zero Theophylline Images by Jynto |