Methyl 4-cyano-3-hydroxy-2-(trifluoromethoxy)pyridine-6-carboxylate
2-Chloro-5-methyl-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride
6-Cyano-4-hydroxy-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
Methyl 4-cyano-2-hydroxy-6-(trifluoromethoxy)pyridine-3-carboxylate