- Tetranortriterpenoid
The tetranortriterpenoid class of chemical compounds most noted for the chemical
azadirachtin , extracted from theneem tree ("Azadirachta indica") that displays insecticidal properties. Azadirachtin mimics insect hormones calledecdysone s that regulate pupation of insects; application of azadirachtin interrupts the development and pupation of insects, which eventually kills them.Azadirachtin is a
limonoid .
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