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