Dyfonate [0-Ethyl S-phenylethyl phosphonodithioate ] 
The metabolism of dyfonate in rats was studied by means of labeled 
insecticide. When C!*-ethoxy labeled dyfonate was administered, 95% of 
the label was found in the urine; 5% in feces; and only a trace (0.5%) in 
exhaled air. With $3°5-label, 63% of the dose was recovered in urine; 32% 
in feces; 2% in tissues; and 0.1% in exhaled air. Diethyl phosphate and 
thiophosphate, thiophenol, methylphenylthioether, and thiolate analog of 
dyfonate were observed (981). 
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