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