Chemical Behavior of Systox Isomers in Biological Systems12

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Abstract
A thorough knowledge of the chemical behavior and reactions of systemic insecticides in biological systems is essential in order to define clearly the nature of the toxic substance or substances derived by the system. Systemic insecticides are defined as those which are absorbed and translocated to other parts of the plant, thus exerting their toxic influence on insects throughout the entire plant. A systemically active substance may exert its action by being absorbed and distributed unchanged, as appears to be the case with some derivatives of 2-fluoroethyl alcohol (Schrader 1952), or it may be acted upon by certain systems in the plant and converted to toxic metabolic products. In general, the organo-phosphorus compounds appear to fall in the latter category, and it is with these substances that a great deal of effort has been expended upon the elucidation of their chemical behavior in biological systems. The identification and knowledge of the physico-chemical properties of these metabolic poisons is important not only from the standpoint of residual hazards to mammals but also for a clearer understanding of the systems involved, thus laying the foundation for th.3 development of future systemics.

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