Orientin is a flavone, a chemical flavonoid-like compound.

Orientin is found in Adonis vernalis, in Anadenanthera colubrina and Anadenanthera peregrina, and in the Phyllostachys nigra bamboo leaves[1] Orientin is also reported in the passion flower,[2] the Açaí palm, buckwheat sprouts,[3] and in millets.

[4] The identification of orientin has been reported widely.

Its identification using mass spectrometry is established.

[5] Isoorientin (or homoorientin) is the luteolin-6-C-glucoside.