5-26-14-00016 (Beilstein Handbook Reference) 70454-31-8 BRN 1187437 Piperazine, 1-(3-pyridinylcarbonyl)-4-(2-(1,2,3,6-tetrahydro-1,3-dimethyl-2,6-dioxo-7H-purin-7-yl)ethyl)-