3-Cyano-4-(difluoromethyl)-2-hydroxy-5-(trifluoromethoxy)pyridine
3-Cyano-4-methoxy-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride
3-Cyano-2-methoxy-6-(trifluoromethoxy)pyridine-4-sulfonyl chloride
2-Cyano-3-hydroxy-5-(trifluoromethoxy)pyridine-6-carboxaldehyde