Isovitexin (or homovitexin, saponaretin) is a flavone, namely the apigenin-6-C-glucoside.

In this case, the prefix 'iso' does not imply an isoflavonoid (the position of the B-ring on the C-ring), but the position of the glucoside on the flavone, in comparison to vitexin.

It can be found in the passion flower, Cannabis, oat and the açaí palm.

[1] Saponarin is the isovitexin-7-O-glucoside.