2-Cyano-5-methoxy-6-(trifluoromethoxy)pyridine-3-sulfonyl chloride
5-Cyano-3-methoxy-2-(trifluoromethoxy)pyridine-4-methanol
2-Cyano-5-methoxy-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Cyano-4-methoxy-5-(trifluoromethoxy)pyridine-3-sulfonyl chloride