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purpurin Definition

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purpurin
noun(pur-pu-rin)
an orange or red crystalline compound C14H8O5 obtained from madder root along with alizarin or by oxidation of alizarin and used in dyeing
purpurin
noun(pur-pu-rin)
any of various colored compounds obtained from chlorophyll or related compounds by the action of cold alcoholic alkali and oxygen

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