OCS-21693 [Methyl 2,3,5,6-Tetrachloro-N—Methoxy-N=Methylterephthalamate ] 
After exposure of a Holstein cow to this compound, it was excreted as 
the hydrolysis product, 2,3,5,6-tetrachloro—4-carboxy-N-methoxy-N-methy 1lbenz- 
amide, in urine and feces. Similarly, the herbicide was rapidly hydrolyzed 
by beef liver slices or homogenate. When incubated with fresh rumen fluid 
for six hours, no decomposition was observed (1727). 
(See also Dacthal) 

CE Cl 
Gls 
oF \octt 
OCS-21693 
263 
