Ethyl 3-methyl-2-nitro-5-(trifluoromethoxy)pyridine-4-carboxylate
4-(Difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine-2-carboxaldehyde
5-(Difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine-4-methanol
2-Methyl-4-nitro-5-(trifluoromethoxy)pyridine-3-carbonyl chloride