A monoterpenoid that is cyclohepta-2,4,6-trien-1-one substituted by a hydroxy group at position 2 and an isopropyl group at position 4. Isolated from Thuja plicata and Chamaecyparis obtusa, it exhibits antimicrobial activities.

Function:
1.It is a potent antioxidant against peroxynitrite.
2.It has the effect of anti-inflammatory . Hesperetin can indirect inhibit the inflammatory reaction by inhibiting the release of a rachidonic acid metabolite and histamine.
3.It can prevent blood platelet agglutination , prophylaxis the formation of thrombus and protect Cardiovascular system .
4.It and naringenin have Lipid-lowering efficacy.
5.It has antimutagenic propertie .