murexide
紫□酸銨; 紅紫酸銨
mu·rex·ide /mjʊˈrɛkˌsaɪd/ 名詞
骨螺紫,紅紫酸胺,紅紫酸銨,紫反酸銨
Mu·rex·ide n. Chem. A crystalline nitrogenous substance (C8H8N6O6, 5-5'-nitrilodibarbituric acid monoammonium salt) having a splendid dichroism, being green by reflected light and garnet-red by transmitted light. It was formerly used in dyeing calico, and was obtained in a large quantities from guano. It is now synthesized from alloxan. Formerly called also ammonium purpurate.
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