sodium p-[[5-[(3-acetamidophenyl)azo]-2,4-dihydroxyphenyl]azo]benzenesulphonate

4-[5-[3-(Acetylamino)phenylazo]-2,4-dihydroxyphenylazo]benzenesulfonic acid sodium salt

Benzenesulfonic acid, 4-5-3-(acetylamino)phenylazo-2,4-dihydroxyphenylazo-, monosodium salt