Caffeine = 1,3,7-Trimethylxanthine
A different view of the caffeine molecule.
The Department of Chemistry at Jamaica of the University of Western Indies has made available an avi and an mpeg of a rotation of the caffeine molecule, among other molecules and chemical processes. The index page contains more information and the links to the clips.
CH3 | N / \ N----C C==O || || | || || | CH C N--CH3 \ / \ / N C | || CH3 O
Theobromine is also a common component of coffee, tea, chocolate, and mate (particularly in these last two).
Theobromine CH3 | N / \ N----C C==O || || | || || | CH C N--H \ / \ / N C | || CH3 O
Theophylline was once thought to be a major component of tea.This is not correct. Tea contains significantly more amounts of caffeine than of theophylline.
Theophylline CH3 | N / \ N----C C==O || || | || || | CH C N--CH3 \ / \ / N C | || H O