2,7-Naphthalenedisulfonicacid, 4-[(4-amino-5-methoxy-2-methylphenyl)azo]-5-[(phenylsulfonyl)oxy]- (9CI);2,7-Naphthalenedisulfonic acid, 4-[(4-amino-5-methoxy-o-tolyl)azo]-5-hydroxy-,benzenesulfonate (ester) (8CI)
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