1-Naphthalenediazonium, 4-((4-((3-carboxy-4-hydroxyphenyl)azo)phenyl)azo)-6-sulfo-, hydroxide, inner salt 1-Naphthalenediazonium, 4-((4-((3-carboxy-4-hydroxyphenyl)azo)phenyl)azo)-6-sulfo-, inner salt 72152-91-1