1,3-Dimethyl-1,2,3,6-tetrahydro-2,6-dioxo-7H-purine-7-acetonitrile 39908-33-3 4-26-00-02395 (Beilstein Handbook Reference) 7-Cyanomethyltheophylline 7H-Purine-7-acetonitrile, 1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo- BRN 0255613