Einecs 229-959-5;N-Toluenesulfonyl H-Acid;4-Hydroxy-5-[(4-methylphenyl)sulfonylamino]-2,7-naphthalenedisulfonic acid;8-(p-toluenesulfonylamino)-3,6-disulfo-1-naphthol;4-Hydroxy-5-tosylamino-2,7-naphthalenedisulfonic acid;
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