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Betulin

   Also found in: Wikipedia 0.09 sec.
Bet´u`lin
n.1.(Chem.) a term originally applied to a substance obtained as a resin or tar by extraction from the outer bark of the common European white birch (Betula alba); now referring to the chemical compound (C30H50O2) having a cyclopentanophenanthrene ring system, which is the main constituent of that extract, and which may be obtained crystalline; - called also birch camphor.
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Five chemicals in raisins--oleanolic acid, oleanolic aldehyde, betulin, betulinic acid, and 5-(hydroxymethyl)-2-furfural--seem to be responsible for this effect.
Raisins may combat cavity-causing bacteria by Science News
The pellets will be further processed into commercial quantities of bioactive, non-toxic compounds such as betulin and betulinic acid.
NaturNorth Technologies Building Birch Bark Processing Facility near ... by Business Wire
The researchers extracted the raw material, betulin from the bark of birches culled from a Chicago parking lot.
Birch bark has an anticancer bite by Centofanti, Marjorie / Science News
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