Synonyms: 6,6'-(1,4-Piperazinediyl)bis-2,4-pyrimidinediamine 3,3'-dioxide;2,4-Pyrimidinediamine, 6,6'-(1,4-piperazinediyl)bis-, 3,3'-dioxide;AC1MIG1M;LS-135015;6-[4-(6-amino-1-hydroxy-2-iminopyrimidin-4-yl)piperazin-1-yl]-3-hydroxy-2-iminopyrimidin-4-amine;83540-33-4