| 摘要 |
<p>A compound of the formula <IMAGE> in which R1 represents a hydrogen or halogen atom or an alkyl radical, R2 represents a hydrogen or halogen atom, X represents an oxygen or sulphur atom, Y represents a hydrogen or halogen atom or an alkyl or halogenoalkyl radical and A represents an alkylene radical which is substituted by fluorine and optionally additionally substituted by chlorine, which possesses insecticidal activity.</p> |
