Seventeen rethronyl esters were prepared and their toxicities towards the housefly were measured and compared with those of allethrin or standard pyrethrin. As a result, a new acid comporlent with a high activity, 2, 2, 3, 3-tetramethyl-cyclopropanecarboxylic acid, was discovered and some information was obtained about the correlation between chemical structure and activity.
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Matsui et al. (1967) studied this question.