Permethrin is a cyclopropanecarboxylate ester in which the esterifying alcohol is 3-phenoxybenzyl alcohol and the cyclopropane ring is substituted with a 2,2-dichlorovinyl group and with gem-dimethyl groups. It has a role as a pyrethroid ester insecticide, a pyrethroid ester acaricide, an agrochemical, an ectoparasiticide and a scabicide. It is a member of cyclopropanes and a cyclopropanecarboxylate ester. It is functionally related to a 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acid.