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