1,3-Naphthalenedisulfonicacid, 4-amino-6-[(6-amino-2-hydroxy-4-sulfo-1-naphthalenyl)azo]-5-hydroxy-(9CI); 1,3-Naphthalenedisulfonic acid,4-amino-6-[(6-amino-2-hydroxy-4-sulfo-1-naphthyl)azo]-5-hydroxy- (8CI)
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