1H-Purine-2,6-dione, 3,7-dihydro-1,3-dimethyl-8-(1-methylethyl)- 2850-40-0 8-Isopropyltheophylline NSC14303 Theophylline, 8-isopropyl- WLN: T56 BM DN FNVNVJ CY1&1 F1 H1 Xanthine, 1,3-dimethyl-8-isopropyl-