2,7-Naphthalenedisulfonicacid, 5-amino-4-hydroxy-3-[(1-sulfo-2-naphthalenyl)azo]-, trisodium salt (9CI);2,7-Naphthalenedisulfonic acid, 5-amino-4-hydroxy-3-[(1-sulfo-2-naphthyl)azo]-,trisodium salt (7CI,8CI)
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