3-(4-hydroxy-phenylazo)-benzenesulfonic acid

1-(4-methylphenyl)-3-phenyl-3-hydroxytriazene

benzoic acid-[(4-oxo-cyclohexa-2,5-dienylidene)-phenyl-hydrazide]

4-(4-Amino-[1]naphthylazo)-phenol

4-苯甲氧基苯胺盐酸盐