N-methylcarbamates. Dimetilan was degraded by this system (Hodgson and 
Casida, 1960, 1961). 
Exposure of dimetilan to ultraviolet radiation gave rise to three de- 
gradation products, one of which was identified as the monomethyl compound 
3-methy1l-5-hydroxy-pyrazol-5-dimethylcarbamate (Eberle and Gunther, 1965). 


CH, 
ane POE 
Dimetilan 
CH; | CH; 
MOEN, poke ont, fotnce 
2-(N-hydroxymethyl, N-methyl) 
carbamoyl-3 methyl 5-pyrazolyl 
2-Dimethylcarbamoy1-3-methyl- 
5-pyrazolyl N-hydroxymethyl, 
N-methylcarbamate 
Pe 
dimethylcarbamate 

HocH, St C _LCH,OH 
®w-c- C-NT 2 
eng NWF OO Mou 
2-(N-hydroxymethyl, N-methyl) carbamoyl- 
3-methy1-5-pyrazolyl N-hydroxymethyl, 
N-methylcarbamate 
CH; 
H. 9 9 CH 
‘N-C=N ons 
2-N-methy lcarbamoy1-3-methyl- 
5-pyrazolyl dimethylcarbamate 
94 
