1H-Purine-2,6-dione, 8-(4-(1H-benzimidazol-2-yl)butyl)-3,7-dihydro-1,3-dimethyl- (9CI) 74039-64-8 8-(4-(2-Benzimidazolyl)butyl)theophylline Benzimidazole, 2-(4-(theophyllin-8-yl)butyl)- NSC 81509 Theophylline, 8-(4-(2-benzimidazolyl)butyl)-