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