1H-Purine-2,6-dione, 3,7-dihydro-1,3-dimethyl-8-(3-phenyl-2-propenyl)- (9CI) 4-26-00-02580 (Beilstein Handbook Reference) 74039-67-1 8-Cinnamyl-theophylline BRN 0035201 NSC 14321 Theophylline, 8-cinnamyl-