Sumitomo Chemical Company, Limited

Yoko Torisu

Noritada Matsuo

Toshihiko Yano

Kazunori Tsushima

Tohei Takagaki

Hirosi Kisida

Sumio Nishida

Tomotoshi Imahase

Kazunobu Dohara

Kenichi Mikitani

Hiroko Sekihachi

Hiroko Kishino

An insecticidal and/or acaricidal composition comprising as active ingredients 2-methyl-4-oxo-3-(2-propynyl)cyclopent-2-enyl chrysanthemate and a phenoxybenzyl ester compound having the formula [I], ##STR1## wherein R.sup.1 is hydrogen or cyano, R.sup.2 is hydrogen or fluorine, and X is chlorine or bromine, is markedly effective against insect pests having a low sensitivity to pyrethroid and acarine pests which cannot be effectively controlled by the use of a single agent.

Insecticidal and/or acaricidal composition

This invention relates to a novel carboxylic acid esters represented by the formula (I) below and insecticides containing them as an active ingredient, ##STR1## wherein R represents a C.sub.1-5 alkyl group, a C.sub.3-6 cycloalkyl group, a C.sub.3-6 alkenyl group, a C.sub.3-6 alkynyl group or a C.sub.1-5 haloalkyl group.

Novel carboxylic acid esters and insecticides containing them as an

This invention relates to novel carboxylic acid esters represented by the formula (I) below, methods for their production and insecticides and/or acaricides containing them as an active ingredient, ##STR1## wherein R.sup.1 represents a C.sub.1-5 alkyl group, a C.sub.2-4 alkenyl group or a C.sub.2-4 alkynyl group; R.sup.2 represents a fluorine atom or a methyl group; and R.sup.3 represents a hydrogen atom or a methyl group.

Novel carboxylic acid esters, methods for producing them and

A compound of the formula: ##STR1## which is useful as an insecticide.

Hydrazone compound and production therefor, and an insecticidal

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Ashiya, Japan

Yoko Torisu