Ethyl 4-(difluoromethyl)-3-nitro-2-(trifluoromethoxy)pyridine-5-acetate
Ethyl 3-(difluoromethyl)-2-methoxy-4-(trifluoromethoxy)pyridine-6-acetate
Ethyl 4-(difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine-5-acetate
2-(Chloromethyl)-6-methyl-4-nitro-3-(trifluoromethoxy)pyridine