PEE Ee 
Investigations with demeton-S have shown that thin films undergo 
rapid conversion to more hydrophilic compounds when exposed to air and 
light. Following application to plants, demeton-S rapidly gave rise to 
at least three metabolites, two of which persisted for as long as 15 
weeks. Using chromatographic techniques, two of the compounds were 
identified as the corresponding sulfoxide and sulfone (504, 639, 1402, 
1404, 1405). 
Pats uy See 
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