purpurin$65624$ - translation to italian
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purpurin$65624$ - translation to italian

CHEMICAL COMPOUND
Hydroxylizaric acid; Purpurin (dye)

purpurin      
n. (Chim) porporina

Definition

Purpurin
·noun A dyestuff resembling alizarin, found in madder root, and extracted as an orange or red crystalline substance.

Wikipedia

1,2,4-Trihydroxyanthraquinone

1,2,4-Trihydroxyanthraquinone, commonly called purpurin, is an anthraquinone. It is a naturally occurring red/yellow dye. It is formally derived from 9,10-anthraquinone by replacement of three hydrogen atoms by hydroxyl (OH) groups.

Purpurin is also called verantin, smoke Brown G, hydroxylizaric acid, and C.I. 58205. It is a minor component of the classical lake pigment "madder lake" or Rose Madder.