73507-13-8 EINECS 277-488-9 Sodium hydrogen (2-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-5-sulphobenzoato(3-))(2-((4,5-dihydro-5-oxo-1,3-diphenyl-1H-pyrazol-4-yl)azo)benzoato(2-))chromate(2-)