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An oxonium betaine obtained by deprotonation of the 3-hydroxy group of any 3-hydroxyanthocyanidin cation. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.)." []

A member of the class of flavonoid with a 2-aryl-1-benzopyran-4-one (2-arylchromen-4-one) skeleton and its substituted derivatives." []

Any isoflavonoid with a 3-aryl-1-benzopyran-4-one (3-aryl-4H-chromen-4-one) skeleton and its substituted derivatives." []

Any neoflavonoid with a 4-aryl-2H-1-benzopyran-2-one (4-arylcoumarin) skeleton and its substituted derivatives." []

Any member of the class of 1-benzofurans with an arylmethylidene substituent at position 2. The term was originally restricted to natural products, but is now also used to describe semi-synthetic and fully synthetic compounds." []

Members of the class of benzofurochromene with a 6H-[1]benzofuro[3,2-c]chromene skeleton and its substituted derivatives. They are the 3,4-didehydroderivatives of pterocarpans." []