2,4-Diamino-6-(4-methyl-1-piperazinyl)pyrimidine 3-oxide dihydrochloride hydrate 2,4-Diamino-6-(4-metilpiperazinil)pirimidina 3-ossido [Italian] 83540-32-3 Pyrimidine, 2,4-diamino-6-(4-methyl-1-piperazinyl)-, 3-oxide, dihydrochloride, hydrate