PROBLEM TO BE SOLVED: To provide an insect-controlling agent useful for controlling harmful insects.SOLUTION: There is provided an insect-controlling agent containing a compound represented by formula (1) (wherein R1 is linear or branched 2-4C alkyl R2 is hydrogen or methyl and R3 is 1-2C hydroxyalkyl) as an active ingredient.COPYRIGHT: (C)2013,JPO&INPIT【課題】有害な昆虫の防除に有用な昆虫防除剤の提供。【解決手段】下記式(1)で示される化合物を有効成分とする昆虫防除剤(式中、R1は、直鎖又は分枝鎖のC2-C4アルキル基であり、R2は、水素又はメチル基であり、R3は、C1-C2ヒドロキシアルキル基である)。【化1】【選択図】なし