3d image of murexide skeletal formula

murexide purpuric acid ammonium salt purpurate mx acid indicator reagent pigment paint colorant synthetic dye dyestuffs indicator stain ph purple acidic blue-purple alkaline solution alloxantin analytical chemistry complexometric titration calcium copper nickel cobalt thorium rare-earth metals tridentate ligand calcium-ion selective electrodes 3d atom model formula biochemical biomolecule ball stick stuff reaction structure material molecular isolated synthesis matter