Filpronil

1. Basic Information
Common Name: Fipronil
Chemical Name: 5-Amino-1-(2,6-dichloro-4-trifluoromethylphenyl)-4-trifluoromethylsulfinyl-1H-pyrazole-3-carbonitrile
Molecular Formula:
CAS No.: 120068-37-3
Physical State: White solid
Chemical Class: Phenylpyrazole insecticide

2. Mode of Action
Acts on the insect central nervous system by targeting the gamma‑aminobutyric acid (GABA) receptor.
Inhibits chloride ion channels, causing abnormal nerve excitation, convulsions, paralysis, and death.
Acts mainly by stomach poisoning and contact action, with additional systemic and fumigant effects.
Extremely broad‑spectrum; highly effective against various resistant pests.

3. Key Features
Broad‑spectrum & High Efficiency: Effective against Lepidoptera, Coleoptera, Homoptera, Blattodea, lice, fleas, ticks, mites, etc.
Resistance Management: Excellent control against pests resistant to organophosphates, pyrethroids, and carbamates.
Long Residual Activity: Field persistence of over 20 days.
Complete Control: Active against eggs, larvae, and adults.
Good Stability: Rainfast; suitable for soil and seed treatment.