C7H8N4O2
a bitter, crystalline alkaloid, extracted from the leaves and seeds of the cacao plant, used in medicine as a diuretic and nerve stimulant, kakaopuu (Theobroma) seemneis ja teelehtedes sisalduv alkaloid, valmistatakse ka sünteetiliselt; kasut veresooni laiendava ja bronhe lõõgastava ravimina