5-26-14-00034 (Beilstein Handbook Reference) 70454-33-0 BRN 1190114 Piperazine, 1-(3-pyridinylcarbonyl)-4-(4-(1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo-7H-purin-7-yl)butyl)-