Definition of purpurin in English:

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Pronunciation: /ˈpəːpjʊrɪn/


[mass noun] Chemistry
A red dye originally extracted from madder and also prepared artificially by the oxidation of alizarin.
Example sentences
  • Alizarin is the main colourant molecule, but the extract also contains a closely related compound called purpurin, which (despite the name) imparts an orange colour.
  • Additionally, monascus pigments, purpurin, chlorophyllin and curcumin were reported to inhibit the mutagenicity of heterocyclic amines and other carcinogens.
  • In general, these newer drugs have been based on the structure of chlorin, purpurin, phthalocyanine or naphthalocyanine.


Mid 19th century: from Latin purpura 'purple' + -in1.

For editors and proofreaders

Line breaks: pur|purin

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