Juglone

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CIDE DICTIONARY

Juglone, n. [L. juglans the walnut + -one.].

A yellow crystalline substance (C10H6O3) resembling quinone, extracted from green shucks of the walnut (Juglans regia); -- called also nucin. Chemically, it is 5-hydroxy-1,4-naphthalenedione. [1913 Webster]

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