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