Metasystox — mixture of 
0,0-Dimethyl O-ethylmercaptoethyl thiophosphate (I) 
0,0-Dimethyl S-ethylmercaptoethyl phosphorothiolate (ITI) 
Metabolism of metasystox is similar to that of systox. Some studies 
have shown that metasystox also undergoes a non-enzymatic self alkylation. 
There is some indication that systox may undergo the same reaction (1085). 
cuo-bs-cx -CH,-S-CH,-CH 
2 2 2 ) 
OCH, 
Lr 
" ! j 
Ca Re wee oe 3 Gites eat wee 8S 
om 3 CH 
3 
246 
