<unk>  is a colorless-to-red, odorless solid. In solution it is used as a broad-spectrum insecticide and piscicide that works by inhibiting the transfer of electrons from Fe-S centers in Complex I to ubiquinone (see electron transfer chain). This prevents NADH from being converted into usable cellular energy (ATP).<unk>  is commonly used in powdered or emulsified liquid form in fisheries management to remove unwanted fish species (such as to eradicate exotic fish from their non-native habitats).<unk>  is also used in powdered form to reduce parasitic mites on chickens and other fowl.<unk>  is classified by the World Health Organization as a moderately hazardous and is mildly toxic to humans and other mammals. The lowest lethal dose for a child is 143 mg/kg. However, human deaths attributed to<unk>  are rare because its irritating action causes vomiting in cases where it could be fatal. The compound breaks down when exposed to sunlight and usually has a short lifetime (two weeks or less) in the environment.  In water<unk>  may last six months.[citation needed]<unk>  is classified by the USDA National Organic Program as a nonsynthetic and is allowed to be used to grow "organic" produce.<unk>  is produced by extraction from the roots and stems of several tropical and subtropical plant species belonging to the genus Lonchocarpus or Derris. People have been known to catch fish by extracting<unk>  from plants and releasing it into water.  The initial such usage was by various indigenous tribes who simply smashed the roots.
Rotenone
Penimepicycline
Difenoxin
Indospicine
Etafenone
Desaspidin
Clioquinol
Camylofin