Methyl 4-chloro-3-hydroxy-2-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 4-cyano-2-hydroxy-6-(trifluoromethoxy)pyridine-3-acetate
4-Cyano-3-(difluoromethyl)-2-methyl-5-(trifluoromethoxy)pyridine
Ethyl 4-cyano-2-hydroxy-3-(trifluoromethoxy)pyridine-6-acetate