
When cotton plants were exposed to p32 -jabeled dipterex, dimethyl- 
phosphate, monomethylphosphate, and inorganic phosphate were found 
(Mosafa et al., 1965). 
Tests with microorganisms showed that Aspergillus niger, Penicillium 
notatum, and Fusarium sp. hydrolyzed dipterex. One compound was identified 
as O-methyl-2,2,2-trichloro-l-hydroxyethyl phosphonic acid. The other is 
believed to be 2,2,2-trichloro-1l-hydroxyethyl phosphonic acid (Zayed et al., 
1965b, c). 
O OH Cl O 
+ 4 n 
cu,0-P-cu-¢-c1 igor 
! 
CH, OH OCH3 Cl OCH, 
Dipterex ' 
O OH Cl O 
0-P-CH-C-C1 ? M 
CH,O-P-CH-C- -P- 
ayes ; CH0 E OH CH0-P-OH 
OH C1 
OH Ou 
Cl 
CH30H HOCH, -C-C1 
i 
° OH Cl Sa O 
‘ 
HO-P-CH-C-Cl Trichoroethanol HO-P-OH 
| t 
OH Cl OH 
2,2,2-Trichloro-1-hydroxy- Tnorganic 
ethyl phosphonic acid phosphate 
SE Og 0H 
{ ' 
a O OH Cl i Cl 
HO-CH CH-O-P- H-C-Cl HO-CH | sam POSE C=Gt 
“cH= 
conch bb qin 
OH OH OH OH 
Trichloroethanol 
99 
glucuronic acid 
