The object of the present invention is to provide a novel 4, 5-dihydropyrazole-5-thione derivative which exerts remarkably potent miticidal activity. The 4, 5-dihydropyrazole-5-thione derivative of the present invention is represented by the general formula
wherein R1 represents a straight- or branched-chain alkyl group having 1 to 12 carbon atoms or the like; R2 and R3 represent a lower alkyl group or the like; X represents a halogen atom or the like, n is 0 or an integer of 1 to 3; and A represents (̵C or (̵N.
本发明的目的是提供一种新型的 4,5-
二氢吡唑-5-
硫酮衍
生物,它具有显著的杀丝虫活性。本发明的 4,5-
二氢吡唑-5-
硫酮衍
生物由通式表示
其中 R1 代表具有 1 至 12 个碳原子的直链或支链烷基或类似物;R2 和 R3 代表低级烷基或类似物;X 代表卤素原子或类似物;n 为 0 或 1 至 3 的整数;以及 A 代表 (̵C 或 (̵N.