1,3-Dimethyl-2,4-dioxo-9-(dimethylaminopropyl)-1,3,6,7,8,9-hexahydropyrimidino(2,1-f)purine 148711-93-7 Pyrimido(2,1-f)purine-2,4(1H,3H)-dione, 6,7,8,9-tetrahydro-1,3-dimethyl-9-(3-(dimethylamino)propyl)-, monohydrochloride