5,6-diamino-4(1H)-pyrimidinethione; 4-Mercapto-5,6-diaminopyrimidine; 4,5-diaminopyrimidine-6-thiol; 5,6-diamino-3,4-dihydropyrimidine-4-thione; 4-thio-5,6-diaminopyrimidine; 5,6-Diaminopyrimidine-4-thiol; 4,5-DIAMINO-6-MERCAPTOPYRIMIDINE; 5,6-diamino-3H-pyrimidine-4-thione
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