5-Cyano-3-methyl-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
5-Cyano-4-methyl-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride
2-Chloro-5-nitro-4-(trifluoromethoxy)pyridine-3-methanol
3-Cyano-2-methyl-5-(trifluoromethoxy)pyridine-6-sulfonyl chloride