Methyl 3-(difluoromethyl)-6-nitro-4-(trifluoromethoxy)pyridine-2-carboxylate
2-Methyl-5-nitro-3-(trifluoromethoxy)pyridine-4-carbonyl chloride
6-Methyl-4-nitro-3-(trifluoromethoxy)pyridine-2-carbonyl chloride
2-Methyl-4-nitro-3-(trifluoromethoxy)pyridine-5-carbonyl chloride