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3-[[3-[(2,4-Diaminophenyl)azo]phenyl]azo]-4-hydroxy-5-[(2,4-dihydroxyphenyl)azo]naphthalene-2,7-disulfonic acid disodium salt Structure

3-[[3-[(2,4-Diaminophenyl)azo]phenyl]azo]-4-hydroxy-5-[(2,4-dihydroxyphenyl)azo]naphthalene-2,7-disulfonic acid disodium salt