Ethyl 2-chloro-3-hydroxy-5-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 3-chloro-6-hydroxy-2-(trifluoromethoxy)pyridine-4-carboxylate
3-Cyano-4-methyl-2-(trifluoromethoxy)pyridine-5-carboxylic acid
Methyl 5-chloro-2-hydroxy-4-(trifluoromethoxy)pyridine-3-carboxylate