2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-[(hexahydro-2,4,6-trioxo-5-pyrimidinyl)imino]-, monoammonium salt 3051-09-0 Acid ammonium purpurate Ammonium salt purpuric acid Barbituric acid, 5,5'-nitrilodi-, monoammonium salt Murexide NSC215208