Novel insecticidal compositions are comprised of an active isovalerate having the structural formula: ##STR1## wherein Z.sup.1 is hydrogen, ##STR2## Z.sup.2 is either ##STR3## when Z.sup.1 is hydrogen, or hydrogen when Z.sup.1 is either ##STR4## A, when Z.sup.1 is ##STR5## is cyano or ethynyl or, when Z.sup.1 is other than ##STR6## is hydrogen, cyano or ethynyl; X and Y which may be the same or different are chlorine or bromine.
新型
杀虫剂组合物由具有结构式的活性
异戊酸酯组成:##STR1##其中Z.sup.1为氢,##STR2##当Z.sup.1为氢时,Z.sup.2为##STR3##或氢,当Z.sup.1为##STR4##时,A为
氰基或
乙炔基,当Z.sup.1为除##STR6##外的其他物质时,A为氢,
氰基或
乙炔基; X和Y可以相同也可以不同,为
氯或
溴。