85099-44-1 EINECS 285-499-5 Trihydrogen bis(3-((4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo)-4-hydroxybenzene-1-sulphonato(3-))chromate(3-), compound with N,N'-bis-o-tolylguanidine (1:3)