Ethyl 4-(difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine-2-carboxylate
2-Nitro-5-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-3-sulfonamide
Ethyl 4-(difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine-3-carboxylate
2-(Difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine-5-acetic acid