Pyrazoline derivatives useful as insecticides having the formula ##STR1## wherein R.sup.1 represents hydrogen atom, a lower alkyl group, (CH.sub.2).sub.n CN group, (CH.sub.2).sub.n OR group, phenyl group or a halogen-substituted phenyl group; R.sup.2 represents hydrogen atom or methyl group; Y represents hydrogen atom or chlorine atom; X represents oxygen atom, sulfur atom, sulfinyl or sulfonyl group; R.sup.3 represents a halogen-substituted lower alkyl group; and n is integer 1 to 3 and R represents a lower alkyl group.
具有以下结构式的
吡唑啉衍
生物可用作
杀虫剂:其中R.sup.1代表氢原子、较低的烷基基团、(CH.sub.2).sub.n CN基团、(CH.sub.2).sub.n OR基团、苯基或卤代苯基;R.sup.2代表氢原子或甲基基团;Y代表氢原子或
氯原子;X代表氧原子、
硫原子、烯
硫基或磺酰基;R.sup.3代表卤代较低烷基基团;n为1至3的整数,R代表较低的烷基基团。