[Common name] : Chlorpyrifos 
[Chemical name] : O,O-diethyl O-(3,5,6-trichloropyridin-2-yl) phosphorothioate
[CAS NO.] : 2921-88-2
[Use] : Chlorpyrifos is a broad-spectrum organophosphate insecticide used primarily in agriculture to control foliage and soil-borne pests on crops like soybeans, fruit trees, and vegetables.