85959-12-2 4-[[5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulphophenyl]azo]-4,5-dihydro-1-(2-methyl-4-sulphophenyl)-5-oxo-1H-pyrazole-3-carboxylic acid, sodium salt
81717-16-0 ((4-((((Hydroxyamino)oxoacetyl)amino)sulfonyl)phenyl)amino)oxoacetic a cid ethyl ester