85631-86-3

trisodium 4-[[3-[[3-[4,5-dihydro-3-methyl-5-oxo-4-[(4-sulphonatophenyl)azo]-1H-pyrazol-1-yl]phenyl]azo]-2,4-dihydroxyphenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate