sodium 2-[p-[[4-[(p-hydroxyphenyl)azo]-o-tolyl]azo]phenoxy]ethyl sulphate

Phenol, 4-[[3-methyl-4-[[4-[2-(sulfooxy) ethoxy]phenyl]azo]phenyl]azo]-, monosodium salt

Sulfuric acid [2-[p-[[4-[(4-hydroxyphenyl)azo]-o-tolyl]azo]phenoxy]ethyl]=sodium ester salt