3-Cyano-4-methoxy-2-(trifluoromethoxy)pyridine-5-carboxylic acid
2-Chloro-3-(fluoromethyl)-4-methyl-6-(trifluoromethoxy)pyridine
3-Cyano-2-methoxy-4-(trifluoromethoxy)pyridine-5-carboxylic acid
6-Cyano-2-methoxy-4-(trifluoromethoxy)pyridine-3-carboxylic acid