Ethyl 4-(difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine-3-acetate
2-(Bromomethyl)-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-6-carbonyl chloride
Ethyl 4-(difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine-6-acetate
Ethyl 3-(difluoromethyl)-5-nitro-6-(trifluoromethoxy)pyridine-2-acetate