12777-30-9 Acid yellow 127 Benzenesulfonic acid, 2-((1-(2-chloro-6-methylphenyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo)-4-(((3-chloro-1-oxido-1,2,4-benzotriazin-7-yl)carbonyl)amino)-, monosodium salt EINECS 235-817-3 Sodium 4-(((3-chloro-1,2,4-benzotriazin-7-yl)carbonyl)amino)-2-((1-(6-chloro-o-tolyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo)benzenesulphonate N4-oxide