alpha-cyano-3-phenoxybenzyl [1S-[1alpha(R*),3beta]]-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate

(1S,αS)-trans-Cypermethrin is an impurity in the synthesis of θ-Cypermethrin which a synthetic pyrethroid used as an insecticide in large-scale commercial agricultural applications as well as in consumer products for domestic purposes. It behaves as a fast-acting neurotoxin in insects. Cypermethrin can exhibit a toxic effect on the reproductive system.

ChEBI: (1S)-trans-(alphaS)-cypermethrin is a cyclopropanecarboxylate ester.