83400-00-4 Dipotassium hydrogen 4-((4,5-dihydro-3-methyl-5-oxo-1-(4-(((2-(sulphonatooxy)ethyl)amino)sulphonyl)phenyl)-1H-pyrazol-4-yl)azo)-N-(2-(sulphonatooxy)ethyl)toluene-2-sulphonamidate EINECS 280-414-8