Wiktionary
vitexin
n. (context organic compound English) A particular apigenin flavone glucoside
Wikipedia
Vitexin
Vitexin is an apigenin flavone glucoside, a chemical compound found in the passion flower, Vitex agnus-castus (chaste tree or chasteberry), in the Phyllostachys nigra bamboo leaves, in the pearl millet (Pennisetum millet), and in Hawthorn.
Vitexin (data page)
This page provides supplementary chemical data on vitexin.