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