1,2-diphenylguanidine;4-[4-[[2-methoxy-4-[[3-methoxy-4-[[3-methyl-5-oxo-1-(4-sulfophenyl)-4h-pyrazol-4-yl]diazenyl]phenyl]-phenylmethyl]phenyl]diazenyl]-3-methyl-5-oxo-4h-pyrazol-1-yl]benzenesulfonic Acid
CAS No. 72906-56-0