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