Zinophos (0,0-diethyl O-2-pyrazinyl phosphorothioate) 
Information available indicates that the hydrolytic product 2-pyra- 
zinol is rapidly metabolized to smaller fragments (Kiigemagi and Terriere, 
1963). 
N 
“A 5 A-coe He) P . OH Smaller 
C D) file CT ———-} Fragments 
N 
Zinophos 
176 
