purpurin
/ˈpɜːpjʊərɪn/noun
mass noun
1- Chemistry a red dye originally extracted from madder and also prepared artificially by the oxidation of alizarin【化】羟基茜草苏, 红紫素, 紫色素。
1.1
- An anthraquinone derivative; chem. formula: C14H8O5.蒽醌衍生物; 化学分子式： C14H8O5.
词源
mid 19th cent.: from Latin purpura 'purple' + -IN1.