3-Amino-2-(difluoromethyl)-6-nitro-4-(trifluoromethoxy)pyridine
3-Amino-2-(chloromethyl)-5-iodo-4-(trifluoromethoxy)pyridine
3-Amino-2-(difluoromethyl)-4-nitro-6-(trifluoromethoxy)pyridine
6-Amino-2-(chloromethyl)-3-iodo-4-(trifluoromethoxy)pyridine
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