EINECS 229-345-7, 7-({[(4-acetamidophenyl)amino]carbonyl}amino)-4-hydroxynaphthalene-2-sulfonic acid, N-(4-Acetamino-phenyl)-N'-(5-oxy-7-sulfo-naphthyl-(1))-harnstoff, 7-[N'-(4-acetylamino-phenyl)-ureido]-4-hydroxy-naphthalene-2-sulfonic acid, 7-((((4-Acetamidophenyl)amino)carbonyl)amino)-4-hydroxynaphthalene-2-sulphonic acid, 7-[N'-(4-Acetylamino-phenyl)-ureido]-4-hydroxy-naphthalin-2-sulfonsaeure, 7-{[(4-acetamidophenyl)carbamoyl]amino}-4-hydroxynaphthalene-2-sulfonic acid