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