1-Naphthalenediazonium, 4-((3-carboxy-4-hydroxyphenyl)azo)-2-methoxy-, sulfate (2:1) (salt) 4-((3-Carboxy-4-hydroxyphenyl)azo)-2-methoxy-1-naphthalenediazoniumsulfate (2:1) (salt) 68400-32-8 Bis(4-((3-carboxy-4-hydroxyphenyl)azo)-2-methoxynaphthalene-1-diazonium) sulphate EINECS 270-020-4