potassium sodium 4,4'-bis[(4-hydroxyphenyl)azo]stilbene-2,2'-disulphonate

Benzenesulfonic acid,2,2'-(1,2-ethenediyl)bis[5-[(4-hydroxyphenyl)azo]]-,potassium sodium salt

Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[ 5-[(4-hydroxyphenyl)azo]-, sodium potassium salt

Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-[(4-hydroxyphenyl)azo]]-, potassium sodium salt

2,2'-(1,2-Ethenediyl)bis[5-[(4-hydroxyphenyl)azo]benzenesulfonic acid]/sodium/potassium,(1:x:x) salt