Calcium Meso-Tartrate Trihydrate 98.0%

124-Trihydroxyanthraquinone commonly called purpurin is an anthraquinone. It is a naturally occurring redyellow dye. It is formally derived from 910-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.

For R&D use onlynot for drug household or other uses.

Purpurin (1 2 4-trihydroxyanthraquinone) is the key pigment present in the roots of Indian madder (Rubia cordifolia).This pigment produces colors with distinctive heat and light resistant properties.