1H-Purine-2,6-dione, 8-ethyl-3,7-dihydro-, 1,3-dimethyl- (9CI) 1H-Purine-2,6-dione, 8-ethyl-3,7-dihydro-1,3-dimethyl- (9CI) 5770-28-5 8-Ethyltheophylline NSC 14294 Theophylline, 8-ethyl- Xanthine, 1,3-dimethyl-8-ethyl-