Synonyms: 2,7-Naphthalenedisulfonic acid, 4-acetamido-5-hydroxy-(7CI,8CI);1-Acetamido-8-naphthol-3,6-disulfonic acid;4-(Acetylamino)-5-hydroxy-2,7-naphthalenedisulfonic acid;4-Acetamido-5-hydroxy-2,7-naphthalenedisulfonic acid;8-N-Acetylamino-1-naphthol-3,6-disulfonicacid;N-Acetyl-1-amino-8-naphthol-3,6-disulfonic acid;