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A reddish crystalline anthraquinone derivative, C14H8O5, that is isolated from madder root for use as a biological stain and commercial dye.

[Latin purpura, purple; see purple + -in.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Elements & Compounds) a red crystalline compound used as a stain for biological specimens; 1,2,4-trihydroxyanthraquinone. Formula: C14H5O2(OH)3
[C19: from Latin purpura purple + -in]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Mauveine--variously recorded as"Rosolan, Violet paste, Chrome violet, Anilin violet, Anilinpurple, Perkins violet, Indisin, Phenamin, Purpurin, Tyralin, Tyrianpurple, [and] Lydin" in Leffman and Beam'sSelect Methods of Food Analysis (1901)--is your secret dimorphism.
See www.mahalo.com 60 soixante saxonite W2 61 soixante et un extenuations W3 62 soixante-deux index W3 expurgatorius 63 soixante-trois extrapositions W3 64 soixante-quatre penta- Penta/ oxyanthraquinones oxyanthraquinones are organic compounds which have been obtained from purpurin and anthrapurpurin.
Army Research Laboratory, say that they have developed a component for a promising, new lithium-ion battery powered by purpurin, a dye that is derived from the roots of the madder plant.
Washington, December 12 ( ANI ): Researchers including Indian origin scientists have developed a non-toxic and sustainable lithium-ion battery powered by purpurin, a dye extracted from the roots of rose madder plant (Rubia species).
The composition comprises at least one natural dye chosen from orceins, alizarin, purpurin, carminic acid, kermesic acid, purpuroqallin, protocatechaldehyde, indigo, curcumin, spinulosin, apiqenidin, chlorophyllin, sorghum, and cochineal carmine and at least one organic solvent.