1320-07-6 4-((3-((2,4-Dimethylphenyl)azo)-2,4-dihydroxyphenyl)azo)benzenesu- lfonic acid, monosodium salt 8004-54-4 Acid orange 24 Benzenesulfonic acid, 4-((3-((2,4-dimethylphenyl)azo)-2,4-dihydroxyphenyl)azo)-, monosodium salt Benzenesulfonic acid, 4-((3-((dimethylphenyl)azo)-2,4-dihydroxyphenyl)azo)-, monosodium salt C.I. ACID ORANGE 24, MONOSODIUM SALT CI 20170 D & C Brown no. 1 EINECS 215-296-9 Resorcin brown Sodium 4-((3-((dimethylphenyl)azo)-2,4-dihydroxyphenyl)azo)benzenesulphonate