Standards; Pharmaceutical/API Drug Impurities/Metabolites;
3-Methylxanthine (Pentoxifylline EP Impurity B) is a metabolite of Theophylline (58-55-9), which is a Xanthine (X499950) derivative with diuretic, cardiac stimulant and smooth muscle relaxant activities; isomeric with theobromine.They can also act as Bronchodilator.