flavopurpurin

American  

[fley-voh-pur-pyuh-rin] / ˌfleɪ voʊˈpɜr pyə rɪn /

noun

Chemistry.

1. a yellow, crystalline anthraquinone dye, C 14 H 8 O 5 , isomeric with purpurin.

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flavopurpurin British  

/ ˌfleɪvəʊˈpɜːpjʊrɪn /

noun

1. a yellow crystalline dye derived from anthraquinone. Formula: C 14 H 5 O 2 (OH) 3

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Etymology

Origin of flavopurpurin

flavo- + purpurin

Example Sentences

"Alizarins for reds" all contain more or less of alizarin properly so-called, from 1 to 10 per cent., along with anthrapurpurin and flavopurpurin.

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

Anthrapurpurin and flavopurpurin differ little from each other, though the shades dyed with the latter are more yellow.

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

Red.—Alizarin, anthrapurpurin, flavopurpurin, purpurin, alizarin Bordeaux, alizarin garnet R, alizarin maroon, alizarin S, cloth red, diamine fast red, anthracene red, chrome red, chrome Bordeaux, salicine red, erio chrome red, emin red, milling red.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" by Various

Anthrapurpurin and flavopurpurin are obtained from two isomeric disulphanthraquinonic acids, improperly named isoanthraflavic and anthraflavic acids, which are converted into anthrapurpurin and flavopurpurin by a more profound action of potassa.

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