70892-30-7 Copper, 2-((6-amino-1-hydroxy-2-naphthalenyl)azo)benzoate 3-((4-amino-2-methoxyphenyl)azo)-6-(carboxyamino)-4-hydroxy-2-naphthalenesulfonate 4-((4-aminophenyl)azo)benzenesulfonate 2,2'-(1,2-ethenediyl)bis(5-nitrobenzenesulfonate) sodium complexes