2-Hydroxy-4-nitro-5-(trifluoromethoxy)pyridine-3-carbonyl chloride
2-Hydroxy-3-nitro-6-(trifluoromethoxy)pyridine-5-carbonyl chloride
Ethyl 3-hydroxy-2-nitro-6-(trifluoromethoxy)pyridine-4-acetate
Ethyl 4-hydroxy-3-nitro-5-(trifluoromethoxy)pyridine-2-acetate