- a reddish, crystalline, anthraquinone dye, C14H5O2(OH)3, isomeric with flavopurpurin.
Origin of purpurin
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Examples from the Web for purpurin
These chemists isolated two compounds which they named alizarin and purpurin.Coal
We may remark that purpurin has not been obtained by direct synthesis.
In the roots three coloring matters are obtained: alizarin and purpurin, which are both red, and xanthin, which is yellow.Rugs: Oriental and Occidental, Antique & Modern
Rosa Belle Holt
The only dyes in this group which appear somewhat behind the rest in point of fastness are purpurin and alizarin maroon.
Madder contains two closely allied colouring matters, namely, alizarin and purpurin.
- a red crystalline compound used as a stain for biological specimens; 1,2,4-trihydroxyanthraquinone. Formula: C 14 H 5 O 2 (OH) 3
C19: from Latin purpura purple + -in
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- A reddish crystalline compound used as a biological stain.
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