2,7-Naphthalenedisulfonicacid, 5-(acetylamino)-3-[(4-ethoxy-3-sulfophenyl)azo]-4-hydroxy-, trisodiumsalt (9CI); 2,7-Naphthalenedisulfonic acid,5-acetamido-3-[(4-ethoxy-3-sulfophenyl)azo]-4-hydroxy-, trisodium salt(7CI,8CI)
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