Naphthalin-sulfonsaeure-(1)-(5-azo-1)-2-hydroxynaphthalin;Benzyl Red AS C.I. Acid Red 141;5-(2-hydroxy-[1]naphthylazo)-naphthalene-1-sulfonic acid;(Naphthalin-sulfonsaeure-(1))-(5 azo 1)-naphthol-(2);5-(2-Hydroxy-[1]naphthylazo)-naphthalin-1-sulfonsaeure;5-[(2-Hydroxynaphthalen-1-yl)diazenyl]naphthalene-1-sulfonic acid