Disodium ar,ar'-((9,10-dihydro-9,10-dioxo-1,4-anthrylene)diimino)bis(toluenesulphonate);Benzenesulfonic acid, ar,ar'-((9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)diimino)bis(methyl-, disodium salt
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