1-((2-Methyl-4-((2-methylphenyl)azo)phenyl)azo)-2-naphthalenol 1-((4-(o-tolylazo)-o-tolyl)azo)-2-naphtho 1-((E)-(2-Methyl-4-[(E)-(2-methylphenyl)diazenyl]phenyl)diazenyl)-2-naphth 1-(4-(o-Tolylazo)-o-tolylazo)-2-naphthol 1-(4-o-tolylazo-o-tolylazo)-2-naphthol 1-[[2-methyl-4-[(2-methylphenyl)azo]phenyl]azo]-2-naphthaleno 2',3-Dimethyl-4-(2-hydroxynaphthylazo)azobenzene 2’,3-dimethyl-4-(2-hydroxynaphthylazo)azobenzene