Medical Dictionary

purpurin

noun pur·pu·rin \ ˈpər-pyə-rən \

medical Definition of purpurin

1 :an orange or red crystalline compound C14H8O5 obtained from madder root along with alizarin or by oxidation of alizarin and used in dyeing
2 also purpurine play \-rən, -ˌrēn\ :any of various colored compounds obtained from chlorophyll or related compounds by the action of cold alcoholic alkali and oxygen

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