| abstract |
Novel insecticidal compositions are comprised of an active isovalerate having the structural formula: <IMAGE> wherein Z1 is hydrogen, <IMAGE> Z2 is either <IMAGE> when Z1 is hydrogen, or hydrogen when Z1 is either <IMAGE> A, when Z1 is <IMAGE> is cyano or ethynyl or, when Z1 is other than <IMAGE> is hydrogen, cyano or ethynyl; X and Y which may be the same or different are chlorine or bromine. |