Adenosine (USAN, BAN) (brand names Adenocard, Adenocor, Adenic, Adenoco, Adeno-Jec, Adenoscan, Adenosin, Adrekar, Krenosin; former developmental code name SR-96225) is a purine nucleoside composed of a molecule of adenine attached to a ribose sugar molecule (ribofuranose) moiety via a β-N9-glycosidic bond.