Illustrated Glossary of Organic Chemistry

Xanthine: A purine with the molecular structure shown below. IUPAC name 3,7-dihydropurine-2,6-dione. Xanthine derivatives such as caffeine often have stimulant properties.


Xanthine molecular structure.








A chocolate bar.
  
Caffeine   
Theobromine   
Theophylline
Some xanthine natural products found in chocolate.