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