- a reddish, crystalline, anthraquinone dye, C14H5O2(OH)3, isomeric with flavopurpurin.
Origin of purpurin
Examples from the Web for purpurin
Historical Examples of 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
Word Origin for purpurin
- A reddish crystalline compound used as a biological stain.