97403-76-4 Benzenesulfonic acid, 4-(4,5-dihydro-5-imino-4-((2-methoxy-5-((2-(sulfooxy)ethyl)sulfonyl)phenyl)azo)-3-methyl-1H-pyrazol-1-yl)-, disodium salt Disodium p-(4,5-dihydro-5-imino-4-((2-methoxy-5-((2-(sulphonatooxy)ethyl)sulphonyl)phenyl)azo)-3-methyl-1H-pyrazol-1-yl)benzenesulphonate EINECS 306-738-2