1H-Purine-2,6-dione, 8-bicyclo(2.2.1)hept-2-yl-3,7-dihydro-1,3-dimethyl- (9CI) 73908-82-4 8-(2-Norbornyl)theophylline NSC 101807 Theophylline, 8-(2-norbornyl)-