purpurin

American  

[pur-pyoo-rin] / ˈpɜr pjʊ rɪn /

noun

Chemistry.

1. a reddish, crystalline, anthraquinone dye, C 1 4 H 5 O 2 (OH) 3 , isomeric with flavopurpurin.

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purpurin British  

/ ˈpɜːpjʊrɪn /

noun

1. a red crystalline compound used as a stain for biological specimens; 1,2,4-trihydroxyanthraquinone. Formula: C 14 H 5 O 2 (OH) 3

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Etymology

Origin of purpurin

1830–40; < Latin purpur ( a ) purple + -in ²

Example Sentences

See Examples For:

purpurin

In the roots three coloring matters are obtained: alizarin and purpurin, which are both red, and xanthin, which is yellow.

From Rugs: Oriental and Occidental, Antique & Modern A Handbook for Ready Reference by Holt, Rosa Belle

The same operations have also another end—to transform the purpurin into its hydrate, which is brighter and more solid.

From Scientific American Supplement, No. 286, June 25, 1881 by Various

Schützenberger and Schiffert, the coloring matters of madder are alizarin, purpurin, pseudopurpurin, purpuroxanthin, and an orange matter, which M. Rosenstiehl considers identical with hydrated purpurin.

From Scientific American Supplement, No. 286, June 25, 1881 by Various

The purpurin, discovered among the colouring-matters of madder in 1826, is a trihydroxy-anthraquinone; it can be prepared by the oxidation of alizarin, as shown by De Lalande in 1874.

From Coal and What We Get from It by Meldola, Raphael

These chemists isolated two compounds which they named alizarin and purpurin.

From Coal and What We Get from It by Meldola, Raphael