Tags: Chemical Compound, Chemical Substance.
Murexide (NH4C8H4N5O6 or C8H5N5O6·NH3) also called ammonium purpurate or MX is the ammonium salt of purpuric acid. It may be prepared by heating alloxantin in ammonia gas to 100 °C or by boiling uramil (5-aminobarbituric acid) with mercury oxide. W.N. Hartley found considerable difficulty in obtaining specimens of murexide sufficiently pure to give concordant results when examined by means of their absorption spectra and consequently devised a new method of preparation for murexide.
