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Any of a class of flavonoids having the basic C6–C3–C6 arrangement but in which the middle three carbon atoms do not form a closed ring, in contrast to other flavonoids. Chalcones are important precursors in the synthesis of anthocyanin pigments and other flavonoids in plants; their formation is catalysed by the enzyme chalcone synthase.

Subjects: Chemistry — Biological Sciences.

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