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