3-((4-((4-Hydroxy-3-methylphenyl)azo)-3-methoxyphenyl)azo)benzenesulfonic acid monolithium salt 51988-24-0 Benzenesulfonic acid, 3-((4-((4-hydroxy-3-methylphenyl)azo)-3-methoxyphenyl)azo)-, monolithium salt EINECS 257-584-7 Lithium 3-((4-((4-hydroxy-3-methylphenyl)azo)-3-methoxyphenyl)azo)benzenesulphonate