molecule monday

Caffeine (1,3,7-trimethylxanthine) is a naturally occurring central nervous system stimulant belonging to the methylxanthine class.  Methylxanthine is a group of chemical compounds containing one or more methyl (CH3) groups on a xanthine molecule or a purine base. It is naturally occurring in approximately 60 plants including coffee beans, many types of tea, and cacao beans. …