1,3-Naphthalenedisulfonicacid, 7-[(4-amino-5-methoxy-2-methylphenyl)azo]- (9CI);1,3-Naphthalenedisulfonic acid, 7-[(4-amino-5-methoxy-o-tolyl)azo]- (8CI);7-[(4-Amino-5-methoxy-o-tolyl)azo]-1,3-naphthalenedisulfonic acid
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