6359-91-7 Benzenesulfonic acid, 4-chloro-3-(4,5-dihydro-3-methyl-5-oxo-4-((3-((phenylamino)sulfonyl)phenyl)azo)-1H-pyrazol-1-yl)-, monosodium salt EINECS 228-814-3 Sodium 3-chloro-4-(5-hydroxy-3-methyl-4-(3-(phenylaminosulphonyl)phenylazo)-1H-pyrazole-1-yl)benzenesulphonate