4-((5-((4-(4-Butylphenoxy)-6-chloro-1,3,5-triazin-2-yl)amino)-2-sulphophenyl)azo)-4,5-dihydro-5-oxo-1-(4-sulphophenyl)-1H-pyrazole-3-carboxylic acid 97417-01-1 EINECS 306-850-1