Purpurin[pŭr′pū-rin]

Type:Term

Definitions
1. A violet stain related to alizarin by addition of a 4-OH group to alizarin; found in madder root and other members of the Rubiaceae; used to detect calcium salts, boron, and as a histologic stain.

Synonyms
uroerythrin , alizarin purpurin

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