Einecs 285-722-6

7-(4,5-Dihydro-4-((2-hydroxy-3-nitro-5-sulphophenyl)azo)-3-methyl-5-oxo-1H-pyrazol-1-yl)-4-hydroxynaphthalene-2-sulphonic acid

7-[[4,5-Dihydro-4-[(2-hydroxy-3-nitro-5-sulfophenyl)azo]-3-methyl-5-oxo-1H-pyrazol]-1-yl]-4-hydroxy-2-naphthalenesulfonic acid

7-[4,5-dihydro-4-[(2-hydroxy-3-nitro-5-sulphophenyl)azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]-4-hydroxynaphthalene-2-sulphonic acid