Arecatannin B1
Encyclopedia
Arecatannin B1 is a B type proanthocyanidin
B type proanthocyanidin
B type proanthocyanidins are a specific type of proanthocyanidin, which are a class of flavanoids. They are oligomers of flavan-3-ols.-Dimeric B type proanthoanthocyanidins :...

 found in the betel nut
Betel nut
The Areca nut is the seed of the Areca palm , which grows in much of the tropical Pacific, Asia, and parts of east Africa. It is commonly referred to as "betel nut" as it is often chewed wrapped in betel leaves.-Description:...

. It is an arecatannin
Arecatannin
Arecatannins are a class of condensed tannins contained in the seeds of Areca catechu also called betel nut. The arecatannin-type natural products from Ceylonese cassia bark and Areca seed may be considered as an example of true polyphenols....

trimer with a 4β→6 bond.

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