1,5-Naphthalenedisulfonic acid, 2-((4,5-dihydro-3-methyl-5-oxo-1-(4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)-1H-pyrazol-4-yl)azo)- 101297-61-4 2-((4,5-Dihydro-3-methyl-5-oxo-1-(4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)-1H-pyrazol-4-yl)azo)-1,5-naphthalenedisulfonic acid 2-((4,5-Dihydro-3-methyl-5-oxo-1-(4-((2-(sulphooxy)ethyl)sulphonyl)phenyl)-1H-pyrazol-4-yl)azo)naphthalene-1,5-disulphonic acid 52683-88-2 5557-16-4 EINECS 226-919-9