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