Benzenesulfonicacid, 4-[(2,4-diamino-5-methylphenyl)azo]- (9CI); Benzenesulfonic acid, p-[(4,6-diamino-m-tolyl)azo]-(6CI,8CI); 2,4-Diamino-5-(4-sulfophenylazo)toluene;2,4-Diamino-5-(p-sulfophenylazo)toluene
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