
Plumbagin or 5-hydroxy-2-methyl-1,4-naphthoquinone is an organic compound with the chemical formula {chem|C|11|H|8|O|3}. It is regarded as a toxin and it is genotoxic and mutagenic. Plumbagin is a yellow dye, formally derived from naphthoquinone. It is named after the plant genus Plumbago, from which it was originally isolated. It is also commonly...
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http://en.wikipedia.org/wiki/Plumbagin

• (n.) A crystalline substance said to be found in the root of a certain plant of the Leadwort (Plumbago) family.
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http://thinkexist.com/dictionary/meaning/plumbagin/
Plum·ba'gin (plŭm*bā'jĭn)
noun [ Latin
plumbago leadwort, from
plumbum lead; confer French
plombagin .]
(Chemistry) A crystalline substance said to be found in the root of a certain plant of the Leadwort (
Plumbago ) family.
Found on
http://www.encyclo.co.uk/webster/P/110
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