disodium 6-amino-5-[[4-[(3-chlorobenzoyl)amino]-2-sulphonatophenyl]azo]-4-hydroxynaphthalene-2-sulphonate;2-Naphthalenesulfonic acid, 6-amino-5-[[4-[(3-chlorobenzoyl) amino]-2-sulfophenyl]azo]-4-hydroxy-, disodium salt
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