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Pyrethrin I is a derivative of (+)-trans-chrysanthemic acid. [12] [13] Pyrethrin II is closely related, but one methyl group is oxidized to a carboxymethyl group, the resulting core being called pyrethric acid.
Persian powder is a green pesticide that has been used for centuries for the biological pest extermination of household insects, garden pests, and agricultural pests. [2] It may first have been exported from Persia to Ancient Rome.
Pyrethrum was a genus of several Old World plants now classified in either Chrysanthemum or Tanacetum which are cultivated as ornamentals for their showy flower heads. Pyrethrum continues to be used as a common name for plants formerly included in the genus Pyrethrum .
Allethrin I (R = −CH 3) Allethrin II (R = −COOCH 3). The allethrins are a group of related synthetic compounds used in insecticides.They are classified as pyrethroids, i.e. synthetic versions of pyrethrin, a chemical with insecticidal properties found naturally in Chrysanthemum flowers.
Pyrethrum rapidly knocks down flying insects but has negligible persistence — which is good for the environment but gives poor efficacy when applied in the field. Pyrethroids are essentially chemically stabilized forms of natural pyrethrum and belong to IRAC MoA group 3 (they interfere with sodium transport in insect nerve cells). [29]
The Franklin County Sheriff's Office continues to look for a gunman who fatally shot a man last Friday night in the parking lot of a Home Depot store in Prairie Township.