2-Naphthalenesulfonic acid, 5(or 8)-amino-8(or 5)-(2-(2-chlorophenyl)diazenyl)-, sodium salt (1:1);2-Naphthalenesulfonic acid, 5(or 8)-amino-8(or 5)-((2-chlorophenyl)azo)-, monosodium salt;Sodium 5(or 8)-amino-8(or 5)-((2-chlorophenyl)azo)naphthalene-2-sulphonate;sodium 5-amino-8-[(E)-(2-chlorophenyl)diazenyl]naphthalene-2-sulfonate
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