Caffeinenoun
An alkaloid, C8H10N4O2, found naturally in tea and coffee plants which acts as a mild stimulant on the central nervous system.
Theobrominenoun
(chemistry) An alkaloid, of similar structure to caffeine, found in chocolate and cocoa.
Caffeinenoun
a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
Theobrominenoun
An alkaloidal ureide, C7H8N4O2, homologous with and resembling caffeine, produced artificially, and also extracted from cacao and chocolate (from Theobroma Cacao) as a bitter white crystalline substance; - called also dimethyl xanthine.
Caffeine
Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. It is the world's most widely consumed psychoactive drug.
Theobromine
Theobromine, also known as xantheose, is an alkaloid whose name is derived from the Theobroma family. It is the principal alkaloid of Theobroma cacao (cacao plant).