1,3-Dimethyl-1,2,3,6-tetrahydro-2,6-dioxo-7H-purine-7-propanenitrile 7-Cyanoethyltheophylline 7H-Purine-7-propanenitrile, 1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo- UO9076000