the methyl xanthines , theophylline , caffeine and 3-isobutyl-1 methyl xanthine ( mix ) inhibited the pressure responses to noradrnealine , angiotensin ii and potassium ions in the isolated perfused mesenteric vascular bed of the male rat .
C0039771
theophylline
C0000096
3-isobutyl-1 methyl xanthine