RU-15525, a new pyrethroid with a very strong knockdown effect

(E)-5-Benzyl-3- furylmethyl (1-R),3-S)-2,2-dimethyl-3-(2,3,4,5-tetrahydro-2-oxothien-3-ylidenemethyl)cyclopropanecarboxylate or RU-15525 is a new pyrethroid. The action of this compound was tested on Musca domestica and Aedes aegypti and a very strong knockdown effect was observed in comparison with the knockdown effect of allethrin, bioallethrin and (S)-bioallethrin.