sodium 2,5-dichloro-4-(1,3-dihydro-5,7-dinitro-3-oxo-2H-indazol-2-yl)benzenesulphonate;2,5-Dichloro-4-[(1,3-dihydro-5,7-dinitro-3-oxo-2H-indazol)-2-yl]benzenesulfonic acid sodium salt
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