2-Cyano-6-methoxy-3-(trifluoromethoxy)pyridine-5-carbonyl chloride
4-Cyano-3-hydroxy-5-(trifluoromethoxy)pyridine-2-carbonyl chloride
2-Cyano-5-methoxy-6-(trifluoromethoxy)pyridine-3-carbonyl chloride
4-Cyano-3-hydroxy-2-(trifluoromethoxy)pyridine-5-carbonyl chloride