Flavanols: Flavanols or flavan-3-ols or catechins are a subfamily of flavonoids whose structure is based on 2-phenyl-3-chromanol.
The flavanols must not be confused with the flavonols which additionally comprise in position 4 a C=O carbonyl function.
The oligomeric and polymeric structures of flavanols constitute the class of proanthocyanidols or condensed tannins....
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