sodium p-[(4,6-diamino-m-tolyl)azo]benzenesulphonate, 2',4'-Diamino-5'-methylazobenzene-4-sulfonic acid sodium, 2',4'-Diamino-5'-methylazobenzene-4-sulfonic acid sodium salt, 4-[(2,4-Diamino-5-methylphenyl)azo]benzenesulfonic acid sodium salt, Benzenesulfonic acid,4-((2,4-diamino-5-methylphenyl)azo)-,monosodium salt, p-(2,4-Diamino-5-methylphenylazo)benzenesulfonic acid sodium salt, 4-[(2,4-Diamino-5-methylphenyl)azo]benzenesulfonic acid sodium