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