Introduction to the chemistry, isolation, and biosynthesis of methylxanthines.
D002099:Cacao; D002110:Caffeine / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D003069:Coffee; D013662:Tea; D013805:Theobromine / Q000032:analysis*; D013806:Theophylline / Q000032:analysis*
D003069:Coffee; D013662:Tea; D002110:Caffeine; D013806:Theophylline; D013805:Theobromine