Ethyl 6-(bromomethyl)-3-hydroxy-4-(trifluoromethoxy)pyridine-2-acetate
Ethyl 2-(bromomethyl)-5-hydroxy-3-(trifluoromethoxy)pyridine-4-acetate
3-Hydroxy-2-methyl-6-(trifluoromethoxy)pyridine-5-sulfonyl chloride
Ethyl 2-hydroxy-6-methyl-5-(trifluoromethoxy)pyridine-3-acetate