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