Biological Source
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Alkaloid from leaves of Holarrhena floribunda, Holarrhena mitis, Holarrhena congolensis and another Holarrhena sp. (poss. Holarrhena wulfsbergii ),
also from Gleditsia triacanthos (Caesalpiniaceae, Apocynaceae), Chidlowia sanguinea (Leguminosae)
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